Balakrishna Pillai. (1987). Road apakatangalum nivarana marganagalum. NBS.
シカゴスタイル引用形Balakrishna Pillai. Road Apakatangalum Nivarana Marganagalum. Kottayam: NBS, 1987.
MLA引用形式Balakrishna Pillai. Road Apakatangalum Nivarana Marganagalum. NBS, 1987.
警告: この引用は必ずしも正確ではありません.