Книгу можно бесплатно почитать здесь: https://archive.org/details/artofteachingstu00gouirich
Rosetta Stone: Does not provide compelling input, research reports at best suggestive, conflicting reports on users attitudes. Stephen Krashen. International Journal of Foreign Language Education, 2013, vol. 8 (1).
Nation, P. (1997), «Vocabulary size, text coverage, and word lists», in Schmitt; McCarthy, Vocabulary: Description, Acquisition and Pedagogy, Cambridge: Cambridge University Press, pp. 6—19.
How large a vocabulary is needed for reading and listening? Paul Nation. 2006. The Canadian Modern Language Review, 63, 1, September.
Vocabulary size, text coverage and word lists. Paul Nation and Robert Waring. In Schmitt, N. and M. McCarthy (Eds.): Vocabulary: Description, Acquisition and Pedagogy (pp. 6—19). Cambridge: Cambridge University Press. 1997.
Например, вот этот: prowritingaid.com/Free-Online-Collocations-Dictionary.aspx
Эти условия часто упоминаются в работах и лекциях Нейшена, напр.: https://www.youtube.com/watch?v=-RgcY3Ka97Y#t=26 (Developing Fluency in Reading); Paul Nation. The Four Strands. Innovation in Language Learning and Teaching. Vol. 1, No. 1, 2007.
Interview with Stephen Krashen: linguist, researcher & education activist. By John Fotheringham. http://l2mastery.com/blog/linguistics-and-education/methods/stephen-krashen
Swain, M. (1985) Three functions of output in second language learning. In G. Cook B. Seidelhofer (eds) Principle and Practice in Applied Linguistics: Studies in Honour of H. G. Widdowson. Oxford: Oxford University Press.
Перевод обоих отрывков С. Н.
Stephen Krashen on Language Acquisition, Part 2 of 2 (video) https://www.youtube.com/watch?v=ak3UrGCj71s