Gaya APA
Keller, Gerald.. (1990).
Statistics for management and economics 2nded (Ed. 2).
California:
Wadsworth.
Gaya Chicago
Keller, Gerald..
Statistics for management and economics 2nded.
Ed. 2
California:
Wadsworth,
1990.
Text.
Gaya MLA
Keller, Gerald..
Statistics for management and economics 2nded.
Ed. 2
California:
Wadsworth,
1990.
Text.
Gaya Turabian
Keller, Gerald..
Statistics for management and economics 2nded.
Ed. 2
California:
Wadsworth,
1990.
Print.