Gaya APA

Physical Geology. (1987). new jersey: Prentice-Hall, Inc.

Gaya Chicago

Physical Geology. Ed.7. new jersey: Prentice-Hall, Inc, 1987. .

Gaya MLA

Physical Geology. Ed.7. new jersey: Prentice-Hall, Inc, 1987. .

Gaya Turabian

Physical Geology. new jersey: Prentice-Hall, Inc, 1987. .