एपीए उद्धरण

Gupta,Prem kumar, & Hira,D.S. (2012). Problems in Operations Research: Principles and solutions. S Chand.

शिकागो स्टाइल उद्धरण

Gupta,Prem kumar, और Hira,D.S. Problems in Operations Research: Principles and Solutions. Newdelhi: S Chand, 2012.

एमएलए उद्धरण

Gupta,Prem kumar, और Hira,D.S. Problems in Operations Research: Principles and Solutions. S Chand, 2012.