Pilla, G. (1973). Keralaa Sahakaranasangha Aktum Cattannalum. Sahitya Pravarthaka Co-operative Society Ltd.
シカゴスタイル引用形Pilla, G.R. Keralaa Sahakaranasangha Aktum Cattannalum. Kottayam: Sahitya Pravarthaka Co-operative Society Ltd, 1973.
MLA引用形式Pilla, G.R. Keralaa Sahakaranasangha Aktum Cattannalum. Sahitya Pravarthaka Co-operative Society Ltd, 1973.
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