Krishnan Nair, S. (1995). Ponnara Sreedhar. Samskarika prasidheekarana vakuppu,Kerala sarkar.
シカゴスタイル引用形Krishnan Nair, Santhinikethanam. Ponnara Sreedhar. Thiruvananthapuram: Samskarika prasidheekarana vakuppu,Kerala sarkar, 1995.
MLA引用形式Krishnan Nair, Santhinikethanam. Ponnara Sreedhar. Samskarika prasidheekarana vakuppu,Kerala sarkar, 1995.
警告: この引用は必ずしも正確ではありません.