Cita APA (7th ed.)
Punmia, B. (1990). Surveying (9th ed.). Laxmi.
Cita Chicago (17th ed.)
Punmia, B.C. Surveying. 9th ed. New delhi: Laxmi, 1990.
Cita MLA (9th ed.)
Punmia, B.C. Surveying. 9th ed. Laxmi, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.