Παραπομπή APA

Singh, A., & Sharma, U. (1984). Current practices in environmental enginering. International Book Traders.

Παραπομπή Chicago Style

Singh, Alam, και U.S Sharma. Current Practices in Environmental Enginering. Delhi: International Book Traders, 1984.

Παραπομπή MLA

Singh, Alam, και U.S Sharma. Current Practices in Environmental Enginering. International Book Traders, 1984.