Varma,O P. (1973). Economic and regional geography of India. Sterling.
シカゴスタイル引用形Varma,O P. Economic and Regional Geography of India. New Delhi: Sterling, 1973.
MLA引用形式Varma,O P. Economic and Regional Geography of India. Sterling, 1973.
警告: この引用は必ずしも正確ではありません.