Friedlander, Walter A., author
Prentice-Hall, 1968
Buku Teks
Friedlander, Walter A., author
prentice Hall of India, 1974
Buku Teks
Friedlander, Walter A., author
Prentice-Hall, 1980
Buku Teks
Friedlander, Walter A., author
Prentice Hall of India, 1982
Buku Teks
Dobelstein, Andrew W., author
Wadsworth, 2003
Buku Teks