एपीए उद्धरण

Oetti, W., & Ritter, K. (1976). Optimizations and operations research. Springer - Verlag.

शिकागो स्टाइल उद्धरण

Oetti, W., और K. Ritter. Optimizations and Operations Research. New York: Springer - Verlag, 1976.

एमएलए उद्धरण

Oetti, W., और K. Ritter. Optimizations and Operations Research. Springer - Verlag, 1976.