Muhammad Mufid, author
Kencana Prenada Media, 2009
Buku Teks
Siregar, Ashadi, author
Pustaka Book Publisher, 2006
Buku Teks
Haryatmoko, author
Kanisius, 2007
Buku Teks
Johannesen, Richard L., author
Remaja Rosdakarya, 1996
Buku Teks
Sitanggang, H., author
Pustaka Sinar Harapan, 1998
Buku Teks