APA aipamena

Leftwich, R. H. (1980). Economics of social issues (4th ed.). Business Pubs.

Chicago Style aipamena

Leftwich, Richard H. Economics of Social Issues. 4th ed. Dallas, Texas: Business Pubs, 1980.

MLA aipamena

Leftwich, Richard H. Economics of Social Issues. 4th ed. Business Pubs, 1980.