M. Sabir
Asean
Pustaka sinar Harapan, 1992
 Buku Teks
Gill, Ranjit
Asean
Gramedia, 1988
 Buku Teks
Morris, Charles G.
Understanding psychology
Prentice-Hall, 2003
 Buku Teks
Nickels, William G.
Understanding business
McGraw-Hill, 2008
 Buku Teks
Chalmer, Bruce J.
Understanding statistics
Marcel Dekker, 1987
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