by Frank B. Feigert ... [et al.] ; edited by Don C. Piper and Ronald J. Terchek
American Enterprise Institute for Public Policy Research, 1983
Buku Teks
Dowty, Alan
University Press, 1971
Buku Teks
Tony Budidjaja, author
Tatanusa, 2002
Buku Teks
Gurtov, Melvin
Johns Hopkins University Press , 1975
Buku Teks
Kusnitz, Leonard A
Greenwood Press, 1983
Buku Teks