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Buku Teks
Fryar, Maridell
National Textbook Co., 1979
Buku Teks
Kruger, Arthur N.
The Scarecrow Press, Inc., 1968
Buku Teks
Jacobson, Michael D., author
Routledge, 1987
Buku Teks
Dwi Purwanto, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2021
UI - Tesis Membership