APA (7th ed.) Citation

May, P. R. (1970). Origins of hydraulic mining in California ; Oakland: Holmes Book Co.$c1970. Holmes Book Co..

Chicago Style (17th ed.) Citation

May, Philip Ross. Origins of Hydraulic Mining in California ; Oakland: Holmes Book Co.$c1970. Oakland: Holmes Book Co., 1970.

MLA (8th ed.) Citation

May, Philip Ross. Origins of Hydraulic Mining in California ; Oakland: Holmes Book Co.$c1970. Holmes Book Co., 1970.