Weber, Jean E., author
Harper & Row, 1982
Buku Teks
McAllister, Harry E., author
John Wiley, 1975
Buku Teks
LIPI Press,
Majalah, Jurnal, Buletin
McNulty, James E., author
University of Pennsylvania Press, 1964
Buku Teks
Draper, Jean E., author
Harper & Row, 1972
Buku Teks