Παραπομπή σε μορφή APA (7η εκδ.)

Economic research service, USDA, Gibson, P., Wainio, J., Whitley, D., & Bohman, M. (2001). Profiles of tariffs in global agricultural markets: Agricultural economic report No 796.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Economic research service, USDA, Paul Gibson, John Wainio, Daniel Whitley, και M. Bohman. Profiles of Tariffs in Global Agricultural Markets: Agricultural Economic Report No 796. 2001.

Παραπομπή σε μορφή MLA (9th εκδ.)

Economic research service, et al. Profiles of Tariffs in Global Agricultural Markets: Agricultural Economic Report No 796. 2001.