APA
Varma O. P., . (1973). Economic and regional geography of India. Sterling Publishers Pvt Ltd, Jullundur: .
Chicago
Varma O P, . 1973. Economic and regional geography of India. Sterling Publishers Pvt Ltd, Jullundur: .
Harvard
Varma O. P., . (1973). Economic and regional geography of India. Sterling Publishers Pvt Ltd, Jullundur: .
MLA
Varma O P, . Economic and regional geography of India. Sterling Publishers Pvt Ltd, Jullundur: . 1973.