Guerrettaz, A., & Johnston, B. (2013). Materials in the Classroom Ecology. The Modern
Language Journal, 97(3), 779-796. https://doi.org/10.1111/j.1540-
4781.2013.12027.x
Hilton, H. (2008). The Link between Vocabulary Knowledge and Spoken L2 Fluency. Language
Learning Journal, 36(2), 153-166. https://doi.org/10.1080/09571730802389983
Hu, M., & Nation, I. S. P. (2000). Vocabulary Density and Reading Comprehension. Reading
in a Foreign Language, 23(1), 403-430.
Lipinski, S. (2010). A Frequency Analysis of Vocabulary in Three Firs-Year Textbooks of
German. Die Unterrichtspraxis/Teaching German, 43(2), 167-
174. https://doi.org/10.1111/j.1756-1221.2010.00078.x
López-Burton, N., Marqués Pascual, L., & Pardo Ballester, C. (2014). Pura vida 1st
Edition: Beginning Spanish. John Wiley & Sons.
Marcos Miguel, N. (2015). Textbook Consumption in the Classroom: Analyzing a Classroom
Corpus. Procedia-Social and Behavioral Sciences, 198, 309-319.
Matsuoka, W., & Hirsh, D. (2010). Vocabulary Learning through Reading: Does an ELT Course
Book Provide Good Opportunities? Reading in a Foreign Language, 22(1), 56-70.
Nation, I. S. P. (2001). Learning Vocabulary in Another Language. Cambridge University
Press.
Nation, I. S. P. (2006). How Large a Vocabulary is Needed for Reading and Listening? The
Canadian Modern Language Review, 63(1), 59-
82. http://dx.doi.org/10.3138/cmlr.63.1.59
Neary-Sundquist, C. (2015). Aspects of Vocabulary Knowledge in German Textbooks. Foreign
Language Annals, 48(1), 68-81. https://doi.org/10.1111/flan.12126
Robles García, P., & Sánchez-Gutiérrez, C. (2016). La Morfología Derivativa en los Manuales
de Español Elemental Estadounidenses: Un Estudio Exploratorio. Revista Electrónica de
Lingüística Aplicada, 15(1), 70-
86. https://rael.aesla.org.es/index.php/RAEL/article/view/278
Schmitt, N., & Schmitt, D. (2014). A Reassessment of Frequency and Vocabulary Size in L2
Vocabulary Teaching. Language Teaching, 47(4), 484-
503. https://doi.org/10.1017/S0261444812000018
Schmitt, N., Cobb, T., Horst, M., & Schmitt, D. (2017). How much Vocabulary is Needed to
Use English? Replication of Van Zeeland & Schmitt (2012), Nation (2006), and Cobb
(2007). Language Teaching, 50(2), 212-
226. https://doi.org/10.1017/S0261444815000075
Shawer, S. (2010). Classroom-Level Curriculum Development: EFL Teachers as Curriculum-
Developers, Curriculum-Makers and Curriculum-Transmitters. Teaching and Teacher
Education, 26(2), 173-184. https://doi.org/10.1016/j.tate.2009.03.015
Spaine Long, S., Carreira, M., Madrigal Velasco, S., & Swanson, K. (2013). Nexos 3rd
Edition. Boston, MA: Cengage.
Stæhr, L. (2008). Vocabulary Size and the Skills of Listening, Reading and Writing. Language
Learning Journal, 36(2), 139-152. https://doi.org/10.1080/09571730802389975
Tomlinson, B., & Masuhara, H. (2018). The Complete Guide to the Theory and Practice of
Materials Development for Language Learning. Hoboken, NJ: Wiley.
Underwood, J., Cuadrado, C., Melero, P., & Sacristán, E. (2018). Protagonistas 2nd
Edition. Boston, MA: Vista Higher Learning.
Van Zeeland, H., & Schmitt, N. (2012). Lexical Coverage in L1 and L2 Listening
Comprehension: The Same or Different from Reading Comprehension? Applied
Linguistics, 34(4), 457-479. https://doi.org/10.1093/applin/ams074