Macintire, H.J. (Horace James)
J. Wiley. Chapman & Hall, [date of publication not identified]
Buku Teks
Smith, Russell E., author
Delmar, 1997
Buku Teks
Stoecker, Wilbert F. (Wilbert Frederick), author
Erlagga, 1989
Buku Teks
Miller, Rex, 1939-2004, author
Benneth, 1983
Buku Teks
Mahoney, Edward F., author
Reston Publishing, 1983
Buku Teks