Gaya APA
Sharp, G. (1980).
Social power and political freedom. Introd. by Mark O. Hatfield. .
Boston:
Boston Porter Sargent Publishers.
Gaya MLA
Sharp, Gene.
"Social power and political freedom. Introd. by Mark O. Hatfield. ".
Boston:
Boston Porter Sargent Publishers,
1980.
Buku.