Simanjuntak, Herpinus, author
Kesaint Blanc, 2010
Multimedia
Heijden, Kees van der, author
John Wiley & Sons, 1996
Buku Teks
Margaret S. Archer, author
Cambridge University Press, 2003
eBooks
Taylor, Grant, author
McGraw-Hill, 1967
Buku Teks
Simanjuntak, Herpinus, author
Kesaint Blanc, 2017
Buku Teks