സുമംഗല & Sumangala. (1967). കടമകള് (1st.). Sahitya Pravarthaka Co-operative Society Ltd.
Chicago Edition Citationസുമംഗല and Sumangala. കടമകള്. 1st. Kottayam: Sahitya Pravarthaka Co-operative Society Ltd, 1967.
MLA引文സുമംഗല and Sumangala. കടമകള്. 1st. Sahitya Pravarthaka Co-operative Society Ltd, 1967.
警告：這些引文格式不一定是100％准確.