Ponkunnam Varkey. (2003). Sabdikkunna kalappayum mattu pradhana kadhakalum. D C Books.
Dyfyniad Arddull ChicagoPonkunnam Varkey. Sabdikkunna Kalappayum Mattu Pradhana Kadhakalum. Kottayam: D C Books, 2003.
Dyfyniad MLAPonkunnam Varkey. Sabdikkunna Kalappayum Mattu Pradhana Kadhakalum. D C Books, 2003.
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