APA (7th ed.) Zitazioa

Leftwich, R. H., & Sharp, A. M. (1980). Economics of social issues (4th ed.). Business Publications.

Chicago Style (17th ed.) Zitazioa

Leftwich, R. H., eta A. M. Sharp. Economics of Social Issues. 4th ed. USA: Business Publications, 1980.

MLA (9th ed.) Zitazioa

Leftwich, R. H., eta A. M. Sharp. Economics of Social Issues. 4th ed. Business Publications, 1980.