एपीए उद्धरण

Viswanathan,T P. (1992). Keralathile vanapalanam-prasnagalum pariharangalum: Forest management in keral problems and remedies. State institute of languages.

शिकागो स्टाइल उद्धरण

Viswanathan,T P. Keralathile Vanapalanam-prasnagalum Pariharangalum: Forest Management in Keral Problems and Remedies. Thiruvananthapuram: State institute of languages, 1992.

एमएलए उद्धरण

Viswanathan,T P. Keralathile Vanapalanam-prasnagalum Pariharangalum: Forest Management in Keral Problems and Remedies. State institute of languages, 1992.