Gaya APA
Petersen, James (et.all). (2012).
Physical Geography (International Edition).
Canada:
Brooks/Cole Publishing Company.
Gaya Chicago
Petersen, James (et.all).
Physical Geography.
International Edition
Canada:
Brooks/Cole Publishing Company,
2012.
Buku.
Gaya MLA
Petersen, James (et.all).
Physical Geography.
International Edition
Canada:
Brooks/Cole Publishing Company,
2012.
Buku.
Gaya Turabian
Petersen, James (et.all).
Physical Geography.
International Edition
Canada:
Brooks/Cole Publishing Company,
2012.
Buku.