APA (7th ed.) Zitazioa
Agor, R. (2017). A textbook of surveying and levelling (12th ed.). Khanna Pub.
Chicago Style (17th ed.) Zitazioa
Agor, R. A Textbook of Surveying and Levelling. 12th ed. New Delhi: Khanna Pub, 2017.
MLA (9th ed.) Zitazioa
Agor, R. A Textbook of Surveying and Levelling. 12th ed. Khanna Pub, 2017.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.