Gaya APA
Telephone Techniques. (1998).
New York:
[s.n.].
Gaya Chicago
Telephone Techniques.
.
New York:
[s.n.],
1998.
Text.
Gaya MLA
Telephone Techniques.
.
New York:
[s.n.],
1998.
Text.
Gaya Turabian
Telephone Techniques.
New York:
[s.n.],
1998.
Print.