Citazione Stile APA (7a Edizione)

Leftwich, R. H. (1984). Economics of social issues (6th ed.). Business Publications, Inc..

Citazione stile Chigago Style (17a edizione)

Leftwich, Richard H. Economics of Social Issues. 6th ed. Austin, Texas: Business Publications, Inc., 1984.

Citatione MLA (9a ed.)

Leftwich, Richard H. Economics of Social Issues. 6th ed. Business Publications, Inc., 1984.