एपीए उद्धरण

Gupta, S., & Atcheson, R. (2013). Opioid and chronic non-cancer pain. Medknow Publications & Media Pvt Ltd.

शिकागो स्टाइल उद्धरण

Gupta, Sameer, और Robert Atcheson. Opioid and Chronic Non-cancer Pain. Medknow Publications & Media Pvt Ltd, 2013.

एमएलए उद्धरण

Gupta, Sameer, और Robert Atcheson. Opioid and Chronic Non-cancer Pain. Medknow Publications & Media Pvt Ltd, 2013.