APA-ийн эшлэл(7 дахь хэвлэлт)

ebrary, Inc, Bayley, R., & Preston, D. R. (1996). Second language acquisition and linguistic variation. J. Benjamins.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

ebrary, Inc, Robert Bayley, ба Dennis Richard Preston. Second Language Acquisition and Linguistic Variation. Amsterdam ; Philadelphia: J. Benjamins, 1996.

MLA -ийн эшлэл (9 дэх хэвлэлт)

ebrary, Inc, et al. Second Language Acquisition and Linguistic Variation. J. Benjamins, 1996.