Khanna, K., & Gupta, V. (1978). Economic and commercial geography. Sultanchand & Sons.
シカゴスタイル引用形Khanna, K.K, , V.K Gupta. Economic and Commercial Geography. New Delhi: Sultanchand & Sons, 1978.
MLA引用形式Khanna, K.K, , V.K Gupta. Economic and Commercial Geography. Sultanchand & Sons, 1978.
警告: この引用は必ずしも正確ではありません.