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Buku Teks
Suranta Abd. Rahman
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2003
UI - Tesis Membership
Budd, Thomas A.
Alexander Hamilton Institute, 1961
Buku Teks
Fraser, Lyn M.
Prentice-Hall, 1998
Buku Teks
Hills, George S.
Garland Pubishing, 1982
Buku Teks