Gaya APA
OWEN,Oliver S.. (1985).
Natural Resources Conservation An Ecological Approach (4th.ed.).
New York:
Macmillan Publishing company.
Gaya Chicago
OWEN,Oliver S..
Natural Resources Conservation An Ecological Approach.
4th.ed.
New York:
Macmillan Publishing company,
1985.
Teks.
Gaya MLA
OWEN,Oliver S..
Natural Resources Conservation An Ecological Approach.
4th.ed.
New York:
Macmillan Publishing company,
1985.
Teks.
Gaya Turabian
OWEN,Oliver S..
Natural Resources Conservation An Ecological Approach.
4th.ed.
New York:
Macmillan Publishing company,
1985.
Teks.