APA
Friedman.L.C, Erdmann.D.E, . (1982). Techniques of Water-Resources Investigations of the United States Geological Survey. Unites States Government Printing Office: Washington.
Chicago
Friedman.L.C, Erdmann.D.E, . 1982. Techniques of Water-Resources Investigations of the United States Geological Survey. Unites States Government Printing Office: Washington.
Harvard
Friedman.L.C, Erdmann.D.E, . (1982). Techniques of Water-Resources Investigations of the United States Geological Survey. Unites States Government Printing Office: Washington.
MLA
Friedman.L.C, Erdmann.D.E, . Techniques of Water-Resources Investigations of the United States Geological Survey. Unites States Government Printing Office: Washington. 1982.