Penggayaan APA
PARK, Charles F.. (1972).
Earth resources .
Washington:
D.C. Voice of America.
Chicago Style
PARK, Charles F..
Earth resources.
Washington:
D.C. Voice of America,
1972.
Buku.
MLA Style
PARK, Charles F..
Earth resources.
Washington:
D.C. Voice of America,
1972.
Buku.
Turabian Style
PARK, Charles F..
Earth resources.
Washington:
D.C. Voice of America,
1972.
Buku.