R. Sardjito, author
UI-Press, 1994
UI - Pidato
Jeffrey, H.C., author
E. & S. Livingstone, 1968
Buku Referensi
Hicks, Lanis L., author
Jones & Bartlett Learning, 2014
Buku Teks
Foster, George M., author
John Wiley & Sons, 1978
Buku Teks
Healey, Edwin F., author
Loyola University Press, 1956
Buku Teks