APA-ийн эшлэл(7 дахь хэвлэлт)

RICHARDS, J., & LONG, M. (1981). Breakthrough 2: A course in english communication prac-tice. Oxford University Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

RICHARDS, J.C, ба M.N LONG. Breakthrough 2: A Course in English Communication Prac-tice. Kuala Lumpur: Oxford University Press, 1981.

MLA -ийн эшлэл (9 дэх хэвлэлт)

RICHARDS, J.C, ба M.N LONG. Breakthrough 2: A Course in English Communication Prac-tice. Oxford University Press, 1981.