APA (7e ed.) Bronvermelding
Agor, R. A Text Book of Surveying and Levelling. Khanna Publications.
Chicago (17e ed.) Bronvermelding
Agor, R. A Text Book of Surveying and Levelling. New Delhi: Khanna Publications.
MLA (9e ed.) Bronvermelding
Agor, R. A Text Book of Surveying and Levelling. Khanna Publications.
Let op: Deze citaties zijn niet altijd 100% accuraat.