Gaya APA
Gregory, S.. (1978).
Statistical methods and the geographer (4th ed).
New York:
Longman.
Gaya Chicago
Gregory, S..
Statistical methods and the geographer.
4th ed
New York:
Longman,
1978.
Text.
Gaya MLA
Gregory, S..
Statistical methods and the geographer.
4th ed
New York:
Longman,
1978.
Text.
Gaya Turabian
Gregory, S..
Statistical methods and the geographer.
4th ed
New York:
Longman,
1978.
Print.