APA ציטוט

Donaldson, P. (1998). A question of economics. New York: Penguin Books.

Trích dẫn kiểu Chicago

Donaldson, Peter. A Question of Economics. New York: Penguin Books, 1998.

ציטוט MLA

Donaldson, Peter. A Question of Economics. New York: Penguin Books, 1998.