Viswanathan,T P. (1992). Keralathile vanapalanam-prasnagalum pariharangalum: Forest management in keral problems and remedies. State institute of languages.
シカゴスタイル引用形Viswanathan,T P. Keralathile Vanapalanam-prasnagalum Pariharangalum: Forest Management in Keral Problems and Remedies. Thiruvananthapuram: State institute of languages, 1992.
MLA引用形式Viswanathan,T P. Keralathile Vanapalanam-prasnagalum Pariharangalum: Forest Management in Keral Problems and Remedies. State institute of languages, 1992.
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