Gaya APA

WATSON, D, S. (1968). PRICE THEORY AND ITS USES: SECOND EDITION (2th). Boston: HOUGHTON MIFFLIN COMPANY.

Gaya MLA

WATSON, Donald, S.. "PRICE THEORY AND ITS USES: SECOND EDITION". 2th Boston: HOUGHTON MIFFLIN COMPANY, 1968. Textbook.