Gaya APA
Exercises in physical geology. (1986).
New York:
Macmillan.
Gaya Chicago
Exercises in physical geology.
1.
New York:
Macmillan,
1986.
Buku.
Gaya MLA
Exercises in physical geology.
1.
New York:
Macmillan,
1986.
Buku.
Gaya Turabian
Exercises in physical geology.
New York:
Macmillan,
1986.
Buku.