Appleton-Century-Crofts, Inc., 1957
Buku Teks
Edited Ashley W.Goldsworthy, Helen Meredith
The National information Technology Council, 1993
Buku Teks
Andi Fariza Hediani, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2018
UI - Makalah dan Kertas Kerja
Moore, Wilbert E. (Wilbert Ellis), author
Prentice-Hall, 1963
Buku Teks
edited by Robert A. Nisbet
Blackwell, 1972
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