by Ir. Irianto Aritonang
Published by Media Pressindo
Release year 2004

by Drs. Marcel Go, M.S
Published by PT. Rineka Cipta
Release year 1992

by Drs. R. Martino
Published by PT. Rineka Cipta
Release year 1993

by Prof. Dr. Sondang P. Siagian, M.P.A
Published by Bumi Aksara
Release year 2004

by Drs. Basir Barthos
Published by Bumi Aksara
Release year 2005

by Drs. Zulkifli Amsyah, MLS
Published by PT. Gramedia Pustaka Utama
Release year 0

by Salah Wahab
Published by PT. Pradnya Paramita
Release year 2003

by Drs. Ig. Wursanto
Published by Kanisius
Release year 1998

by Mohamad Muslich, S.E., M.B.A
Published by Bumi Aksara
Release year 2003

by Lukman Syamsuddin
Published by Raja Grafindo Persada
Release year 0