Leventhal, Lance A., author
Prentice-Hall, 1982
Buku Teks
Leventhal, Lance A., author
Prentice-Hall, 1981
Buku Teks
Leventhal, Lance A., author
Prentice-Hall, 1987
Buku Teks
Crane, John, author
Prentice-Hall, 1980
Buku Teks
Davis, Thomas W., author
Reston Pub., 1981
Buku Teks