एपीए उद्धरण

Dr.Gopalakrishna Pillai. (2002). Health Encyclopaedia (Malayalam). Aradhana Publications.

शिकागो स्टाइल उद्धरण

Dr.Gopalakrishna Pillai. Health Encyclopaedia (Malayalam). Palakkad: Aradhana Publications, 2002.

एमएलए उद्धरण

Dr.Gopalakrishna Pillai. Health Encyclopaedia (Malayalam). Aradhana Publications, 2002.