Gaya APA

LEFTWICH, R, H., SHARP, A, M. (1984). ECONOMICS OF SOCIAL ISSUES . TEXAS: BUSINESS PUBLICATION, INC.

Gaya MLA

LEFTWICH, RICHARD, H.., SHARP, ANSEL, M.. "ECONOMICS OF SOCIAL ISSUES". TEXAS: BUSINESS PUBLICATION, INC, 1984. Prodi S1 Ekonomi Pembangunan.