APA-ийн эшлэл(7 дахь хэвлэлт)

Lakshmanan, U. (1994). Universal grammar in child second language acquisition: Null subjects and morphological uniformity. J. Benjamins.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Lakshmanan, Usha. Universal Grammar in Child Second Language Acquisition: Null Subjects and Morphological Uniformity. Amsterdam ; Philadelphia: J. Benjamins, 1994.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Lakshmanan, Usha. Universal Grammar in Child Second Language Acquisition: Null Subjects and Morphological Uniformity. J. Benjamins, 1994.