APA aipamena

National water well Association. (1985). Well drilling manual. National water well Association.

Chicago Style aipamena

National water well Association. Well Drilling Manual. India: National water well Association, 1985.

MLA aipamena

National water well Association. Well Drilling Manual. National water well Association, 1985.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.