Diana Rinawati, author
Universitas Indonesia, 2003
UI - Tesis (Membership)
M. Sardjito, author
Penerbitan Universitas, 1962
Buku Referensi
Ford, William W., author
W.B. Saunders, 1927
Buku Teks
Ford, William W., author
Hafner Press, 1964
Buku Teks
Swingle, Deane B., author
D. Van Nostrand, 1950
Buku Teks