Duggal, S. K. (2004). Surveying. New Delhi: Tata McGraw-Hill.
Trích dẫn kiểu ChicagoDuggal, S. K. Surveying. New Delhi: Tata McGraw-Hill, 2004.
MLA引文Duggal, S. K. Surveying. New Delhi: Tata McGraw-Hill, 2004.
警告：這些引文格式不一定是100％准確.
APA引文