Dyfyniad APA
Punmia, B., Jain, A. K., & Jain, A. K. (1994). Surveying (12th ed.). Laxmi.
Dyfyniad Arddull Chicago
Punmia, B.C, Ashok Kumar Jain, and Arun Kumar Jain. Surveying. 12th ed. New delhi: Laxmi, 1994.
Dyfyniad MLA
Punmia, B.C, et al. Surveying. 12th ed. Laxmi, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.