APA aipamena

BEILBY M H. (1975). ECONOMICS AND OPRATIONAL RESEARCH. PITMAN PUBLICATIONS.

Chicago Style aipamena

BEILBY M H. ECONOMICS AND OPRATIONAL RESEARCH. LONDON: PITMAN PUBLICATIONS, 1975.

MLA aipamena

BEILBY M H. ECONOMICS AND OPRATIONAL RESEARCH. PITMAN PUBLICATIONS, 1975.