A textbook of geology.
Part I
Physical geology, by Louis V. Pirsson ...
Part II
Historical geology, by Charles Schuchert ...

APA Citation

Pirsson, L. V. (Louis Valentine)., Longwell, C. R. (Chester Ray)., Agar, W. Macdonough., Schuchert, C. (1929). A textbook of geology. New York: J. Wiley & sons, inc..

MLA Citation

Pirsson, Louis V. (Louis Valentine), 1860-1919, Chester R. (Chester Ray) Longwell, William Macdonough Agar, and Charles Schuchert. A Textbook of Geology. New York: J. Wiley & sons, inc., 1929.

Warning: These citations may not always be complete (especially for serials).