Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.