Παραπομπή σε μορφή APA (7η εκδ.)

Amacher, R. C., & Ulbrich, H. H. (1995). Economic principles & policy (6th ed.). South-Western College.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Amacher, Ryan C., και Holley H. Ulbrich. Economic Principles & Policy. 6th ed. Cincinnati: South-Western College, 1995.

Παραπομπή σε μορφή MLA (9th εκδ.)

Amacher, Ryan C., και Holley H. Ulbrich. Economic Principles & Policy. 6th ed. South-Western College, 1995.