एपीए उद्धरण

S K Gupta. (2006). Drug Screening Methods (1.). Jaypee Brothers.

शिकागो स्टाइल उद्धरण

S K Gupta. Drug Screening Methods. 1. Jaypee Brothers, 2006.

एमएलए उद्धरण

S K Gupta. Drug Screening Methods. 1. Jaypee Brothers, 2006.