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Gaya APA
Sales Training. (2005).
Alexandria:
ASTD Press.
Gaya Chicago
Sales Training.
.
Alexandria:
ASTD Press,
2005.
Text.
Gaya MLA
Sales Training.
.
Alexandria:
ASTD Press,
2005.
Text.
Gaya Turabian
Sales Training.
Alexandria:
ASTD Press,
2005.
Print.