Singh, A., & Sharma, U. (1984). Current practices in environmental enginering. International Book Traders.
استشهاد بنمط شيكاغوSingh, Alam, و U.S Sharma. Current Practices in Environmental Enginering. Delhi: International Book Traders, 1984.
MLA استشهادSingh, Alam, و U.S Sharma. Current Practices in Environmental Enginering. International Book Traders, 1984.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.