Optner, S. L. (1975). System analysis for business management (3rd ed.). Prentice-Hall of India.
Čikaški stil citiranjaOptner, Stanford L. System Analysis for Business Management. 3rd ed. New Jersey: Prentice-Hall of India, 1975.
MLA način citiranjaOptner, Stanford L. System Analysis for Business Management. 3rd ed. Prentice-Hall of India, 1975.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.