Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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