APA-ийн эшлэл(7 дахь хэвлэлт)

Gopal, M. (1970). An Int to Research Procedure in Social sciences (2nd.). Asia Pub House.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Gopal, M. An Int to Research Procedure in Social Sciences. 2nd. NULL: Asia Pub House, 1970.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Gopal, M. An Int to Research Procedure in Social Sciences. 2nd. Asia Pub House, 1970.