Gaya APA
freedman, david. (1978).
Statistics .
New York:
.
Gaya Chicago
freedman, david.
Statistics.
New York:
,
1978.
Text.
Gaya MLA
freedman, david.
Statistics.
New York:
,
1978.
Text.
Gaya Turabian
freedman, david.
Statistics.
New York:
,
1978.
Print.