Tower, Ralph B., author
Prentice-Hall, 1984
Buku Teks
Easton, Geoff, author
Prentice-Hall, 1992
Buku Teks
Terry, George Robert, author
Prentice-Hall, 1956
Buku Teks
Kaligis, O.C. (Otto Cornelis), 1942-, author
O.C. Kaligis & Associates, 2006
Buku Teks
M. Edwinsjah I., author
1989
UI - Skripsi (Membership)