Gaya APA

McKenzie, R, B., Tullock, G. (1985). The New World of Economics (Cet. 1). United States of America: RICHARD D. IRWIN, INC.

Gaya MLA

McKenzie, Richard, B.., Tullock, Gordon. "The New World of Economics". Cet. 1 United States of America: RICHARD D. IRWIN, INC, 1985. Text.