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
Buku Teks