Baddeley, A. (1990). Human memory: Theory and practice. Needham Heights, MA: Allyn & Bacon.
Goulden, R., Nation, P., & Read, J. (1990). How large can a receptive vocabulary be?Applied Linguistics, 11(4), 341–363.
Laufer, B. & Goldstein, Z.. (2004). Testing vocabulary knowledge: Size, strength, and computer adaptiveness. Language Learning, 54(3), 399–436.
Laufer, B. & Nation, P. (1999). A vocabulary-size test of controlled productive ability. Language Testing, 16(1), 33–51.
Saragi, T., Nation, I.S.P., & Meister, F. (1978). Vocabulary learning and reading. System, 6(2), 72–78.
Swan, M. (1997). The influence of the mother tongue on second language vocabulary acquisition and use. In N.. Schmitt, & M. McCarthy (Eds.), Vocabulary: Description, acquisition, and pedagogy (pp. 156–180). Cambridge, UK: Cambridge University Press.