APA Edition Citation

Longwell, C. R. e. (1939). Physical Geology. John Wiley&Sons.

Chicago Edition Citation

Longwell, Chester R. et.al. Physical Geology. New York: John Wiley&Sons, 1939.

MLA Edition Citation

Longwell, Chester R. et.al. Physical Geology. John Wiley&Sons, 1939.

Warning: These citations may not always be 100% accurate.