APA aipamena

Findlay, R. (1970). Trade and specialization. Harmondsworth: Penguin.

Chicago Style aipamena

Findlay, Ronald. Trade and Specialization. Harmondsworth: Penguin, 1970.

MLA aipamena

Findlay, Ronald. Trade and Specialization. Harmondsworth: Penguin, 1970.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.