Krish Pennathur. (1967). Method study. National productivity council.
シカゴスタイル引用形Krish Pennathur. Method Study. New Delhi: National productivity council, 1967.
MLA引用形式Krish Pennathur. Method Study. National productivity council, 1967.
警告: この引用は必ずしも正確ではありません.