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Jones and Bartlett Learning, 2011
Buku Teks
Gilliam, Ronald B.
Jones and Bartlett Publishers, 2011
Multimedia
Afia Fitriani, author
Fakultas Psikologi Universitas Indonesia, 2009
UI - Tesis (Open)
Andersen, Kenneth E.
Cummings Publishing, 1972
Buku Teks
Basic Books , 1963
Buku Teks