APA استشهاد

Sharma, N. L., & Sinha, R. K. (1980). Mineral economics (2.). Oxford I B H publishing company.

استشهاد بنمط شيكاغو

Sharma, N L., و R K. Sinha. Mineral Economics. 2. New Delhi: Oxford I B H publishing company, 1980.

MLA استشهاد

Sharma, N L., و R K. Sinha. Mineral Economics. 2. Oxford I B H publishing company, 1980.