Ingle, Sud, author
Pustaka Sinar Harapan, 1993
Buku Referensi
Hradesky, John L., author
McGraw-Hill, 1995
Buku Referensi
Evans, James Robert, 1950-, author
South-Western, 2002
Buku Teks
Evans, James Robert, 1950-, author
South Western Cengage Learning, 2011
Buku Teks
Evans, James Robert, 1950-, author
South-Western, 1996
Buku Teks