Παραπομπή APA

Hill, B. (1980). Introduction to economics for students of agriculture. Pergamon Press.

Παραπομπή Chicago Style

Hill, Berkeley. Introduction to Economics for Students of Agriculture. Oxford ; New York: Pergamon Press, 1980.

Παραπομπή MLA

Hill, Berkeley. Introduction to Economics for Students of Agriculture. Pergamon Press, 1980.