Basturi Hasan, author
Graha Ilmu, 2018
Buku Teks
ASEAN Secretariat, 2016
Buku Teks
Mouly, George G.
Holt, Rinehart and Winston, Inc., 1968
Buku Teks
Borich, Gary D., author
Prentice-Hall, [date of publication not identified]
Buku Teks
Tornyay, Rheba de, author
John Wiley & Sons, 1982
Buku Teks