APA (7e ed.) Bronvermelding

Leftwich, R. H., & Sharp, A. M. (1982). Economics of social issues (5th ed.). Business Publications.

Chicago (17e ed.) Bronvermelding

Leftwich, Richard H., en Ansel M. Sharp. Economics of Social Issues. 5th ed. Plano, Tex: Business Publications, 1982.

MLA (9e ed.) Bronvermelding

Leftwich, Richard H., en Ansel M. Sharp. Economics of Social Issues. 5th ed. Business Publications, 1982.