Graf, H. (1975). Vaidyuta engineering atistana tatvangal. Institute of languages.
シカゴスタイル引用形Graf, Heinz. Vaidyuta Engineering Atistana Tatvangal. Trivandrum: Institute of languages, 1975.
MLA引用形式Graf, Heinz. Vaidyuta Engineering Atistana Tatvangal. Institute of languages, 1975.
警告: この引用は必ずしも正確ではありません.