APA (7e ed.) Bronvermelding

GUPTA PREM KUMAR. (2009). OPERATION RESEARCH. Issued.

Chicago (17e ed.) Bronvermelding

GUPTA PREM KUMAR. OPERATION RESEARCH. NEW DELHI: Issued, 2009.

MLA (9e ed.) Bronvermelding

GUPTA PREM KUMAR. OPERATION RESEARCH. Issued, 2009.