Cita APA (7a ed.)

Leftwich, R. H. (1982). Economics of social issues (5ª ed.). Business.

Cita Chicago Style (17a ed.)

Leftwich, Richard H. Economics of Social Issues. 5ª ed. Business, 1982.

Cita MLA (9a ed.)

Leftwich, Richard H. Economics of Social Issues. 5ª ed. Business, 1982.