Northouse, Peter G.
Prentice-Hall, 1985
Buku Referensi
Northouse, Laurel L.
Appleton & Lange, 1998
Buku Teks SO
Christoper, Tom
Free Press, 1982
Buku Teks
Robinson, Alice M.
Prentice-Hall, 1982
Buku Teks SO
Teresita V. Ramos
Southeast Asia Studies center for Asian and Pacific Studies, 1985
Buku Teks SO