APA引文

Sharma, T., & Countinho, O. (1977). Economic and commerical geography of India. Vikas.

Chicago Edition Citation

Sharma, Tc, and O. Countinho. Economic and Commerical Geography of India. Vikas, 1977.

MLA引文

Sharma, Tc, and O. Countinho. Economic and Commerical Geography of India. Vikas, 1977.

警告：這些引文格式不一定是100％准確.