Siauw, Soen I.
Elex Media Komputindo, 1989
Buku Teks
Tigor, Surawidjaja Nauli
Gramedia Pustaka Utama , 1992
Buku Teks
Irene Joos ... [and others] ; editor, Widyastuti Palupi
EGC, 2009
Buku Teks
Fairhurst, Michael C.
UI-Press, 1995
Buku Teks
Jogiyanto H.M.
Andi, 1995
Buku Teks