APA Style
Verderber , Rudolph H. (1991).
The Challenger of Effective Speaking .
:
.
Chicago Style
Verderber , Rudolph H.
The Challenger of Effective Speaking.
:
,
1991.
.
MLA Style
Verderber , Rudolph H.
The Challenger of Effective Speaking.
:
,
1991.
.
Turabian Style
Verderber , Rudolph H.
The Challenger of Effective Speaking.
:
,
1991.
.