Punmia, B. C. (1975). Surveying V.2. Standared book House.
Chicago Style aipamenaPunmia, B C. Surveying V.2. Delhi: Standared book House, 1975.
MLA aipamenaPunmia, B C. Surveying V.2. Standared book House, 1975.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.