एपीए उद्धरण

George Onakkoor. (2009). Pranayakathakal. Lipi Publications.

शिकागो स्टाइल उद्धरण

George Onakkoor. Pranayakathakal. Kozhikode: Lipi Publications, 2009.

एमएलए उद्धरण

George Onakkoor. Pranayakathakal. Lipi Publications, 2009.