Jeffery, W. H. (1931). Deep well drilling: The principles and practices of deep well drilling and a hand book of useful information for the engineer and the well driller (3., (rev.) ed.). The Gulf Publ. Company.
Chicago-Zitierstil (17. Ausg.)Jeffery, Walter Henry. Deep Well Drilling: The Principles and Practices of Deep Well Drilling and a Hand Book of Useful Information for the Engineer and the Well Driller. 3., (rev.) ed. Buffalo: The Gulf Publ. Company, 1931.
MLA-Zitierstil (9. Ausg.)Jeffery, Walter Henry. Deep Well Drilling: The Principles and Practices of Deep Well Drilling and a Hand Book of Useful Information for the Engineer and the Well Driller. 3., (rev.) ed. The Gulf Publ. Company, 1931.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.