Devol, Kenneth S., author
Hastings house Publisher, 1971
Buku Teks
Jefkins, Frank William, author
Erlangga, 2004
Buku Teks
E. Saefullah Wiradipradja, author
Regional Institute of Higher Education and Development , 1976
Buku Teks
Church, W. Lawrence, author
ELIPS II, 2002
Buku Teks
Eisenmann, Charles, author
Unesco, 1954
Buku Teks