APA-ийн эшлэл(7 дахь хэвлэлт)

BARRATT, J. (1972). International aspects of overpopulation: Proceedings of a conference held by the. Macmillan.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

BARRATT, Jhon. International Aspects of Overpopulation: Proceedings of a Conference Held by the. London: Macmillan, 1972.

MLA -ийн эшлэл (9 дэх хэвлэлт)

BARRATT, Jhon. International Aspects of Overpopulation: Proceedings of a Conference Held by the. Macmillan, 1972.