Emil Reza Razali, examiner
New York Barron's Educational Series 1970,
Buku Teks
Ulam, Adam B.
Harvard University Press, 1952
Buku Teks
MABES ABRI, 1995
Buku Teks
Milivojevic, Dragoljub
Information Service, 1962
Buku Teks
Selznick, Philip
The Free Press of Glencoe, 1960
Buku Teks