Gaya APA
Introduction to Geography. (2014).
New York:
McGraw-Hill Education.
Gaya Chicago
Introduction to Geography.
1.
New York:
McGraw-Hill Education,
2014.
Buku.
Gaya MLA
Introduction to Geography.
1.
New York:
McGraw-Hill Education,
2014.
Buku.
Gaya Turabian
Introduction to Geography.
New York:
McGraw-Hill Education,
2014.
Buku.