Gaya APA
Group Power : Lobbying and Public Policy. (1977).
New York:
[s.n.].
Gaya Chicago
Group Power : Lobbying and Public Policy.
.
New York:
[s.n.],
1977.
Text.
Gaya MLA
Group Power : Lobbying and Public Policy.
.
New York:
[s.n.],
1977.
Text.
Gaya Turabian
Group Power : Lobbying and Public Policy.
New York:
[s.n.],
1977.
Print.