Gaya APA
Speaking Skills for Business Careers. (1993).
New York:
[s.n.].
Gaya Chicago
Speaking Skills for Business Careers.
.
New York:
[s.n.],
1993.
Text.
Gaya MLA
Speaking Skills for Business Careers.
.
New York:
[s.n.],
1993.
Text.
Gaya Turabian
Speaking Skills for Business Careers.
New York:
[s.n.],
1993.
Print.