Gaya APA
Williams, Robert E.. (1983).
The power of 1-2-3 .
Portland, Oregon:
Management Information Source.
Gaya Chicago
Williams, Robert E..
The power of 1-2-3.
Portland, Oregon:
Management Information Source,
1983.
Text.
Gaya MLA
Williams, Robert E..
The power of 1-2-3.
Portland, Oregon:
Management Information Source,
1983.
Text.
Gaya Turabian
Williams, Robert E..
The power of 1-2-3.
Portland, Oregon:
Management Information Source,
1983.
Print.