Shahani, P. B. (1981). Advanced surveying (2nd ed.).
Dyfyniad Arddull ChicagoShahani, P B. Advanced Surveying. 2nd ed. New Delhi, 1981.
Dyfyniad MLAShahani, P B. Advanced Surveying. 2nd ed. 1981.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.