Geology
[by] O.D. von Engeln [and] Kenneth E. Caster.
APA Citation
Engeln, O. D. von (Oscar Diedrich). (1952). Geology. New York: McGraw-Hill.
MLA Citation
Engeln, O. D. von (Oscar Diedrich), 1880-1965. Geology. New York: McGraw-Hill, 1952.
Warning: These citations may not always be complete (especially for serials).