Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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