Gaya APA
Pitzl, Gerald R.. (2008).
Geography (2nd ed).
Boston:
McGraw-Hill.
Gaya Chicago
Pitzl, Gerald R..
Geography.
2nd ed
Boston:
McGraw-Hill,
2008.
Text.
Gaya MLA
Pitzl, Gerald R..
Geography.
2nd ed
Boston:
McGraw-Hill,
2008.
Text.
Gaya Turabian
Pitzl, Gerald R..
Geography.
2nd ed
Boston:
McGraw-Hill,
2008.
Print.