Gaya APA

Forbush, D, R. et al (1975). Business economics : principles and cases (ed. ke-5). Homwood, Illinouis: Rineka Citri.

Gaya MLA

Forbush, Dascomb, R.. et al. "Business economics : principles and cases". ed. ke-5 Homwood, Illinouis: Rineka Citri, 1975. Text.