APA引文
Duggal,S.K. (2013). Surveying (4th ed.). McGraw-Hill.
芝加哥风格引文
Duggal,S.K. Surveying. 4th ed. New Delhi: McGraw-Hill, 2013.
MLA引文
Duggal,S.K. Surveying. 4th ed. McGraw-Hill, 2013.
警告：这些引文格式不一定是100％准确.