APA aipamena

William Boyes & Michael Melvin. (1991). Economics. Houghton Mifflin.

Chicago Style aipamena

William Boyes and Michael Melvin. Economics. Boston: Houghton Mifflin, 1991.

MLA aipamena

William Boyes and Michael Melvin. Economics. Houghton Mifflin, 1991.