APA (7th ed.) Zitazioa

Gill, R. T. (1978). Economics: A text with readings. Goodyear.

Chicago Style (17th ed.) Zitazioa

Gill, Richard T. Economics: A Text with Readings. Santa Monica.: Goodyear, 1978.

MLA (9th ed.) Zitazioa

Gill, Richard T. Economics: A Text with Readings. Goodyear, 1978.