APA
Charles R Longwell, Adolph Knopf &, . (1958). Physical Geology. New York: John Wiley & Sons.
Chicago
Charles R Longwell, Adolph Knopf &, . 1958. Physical Geology. New York: John Wiley & Sons.
Harvard
Charles R Longwell, Adolph Knopf &, . (1958). Physical Geology. New York: John Wiley & Sons.
MLA
Charles R Longwell, Adolph Knopf &, . Physical Geology. New York: John Wiley & Sons. 1958.