Gaya APA

PETERSON, W, L. (1974). PRINCIPLES OF ECONOMICS MICRO REVISED EDITION (Revised Edition). United States of America.: RICHARD D. IRWIN INC..

Gaya MLA

PETERSON, Willis, L.. "PRINCIPLES OF ECONOMICS MICRO REVISED EDITION". Revised Edition United States of America.: RICHARD D. IRWIN INC., 1974. Textbook.