एपीए उद्धरण

Balakrishnan, P. K. (1987). Jathivyavasthithiyum kerala charithravum.

शिकागो स्टाइल उद्धरण

Balakrishnan, P K. Jathivyavasthithiyum Kerala Charithravum. Kottayam, Sahithya Pravarthaka Co-operative Society, 1987.

एमएलए उद्धरण

Balakrishnan, P K. Jathivyavasthithiyum Kerala Charithravum. 1987.