Freund, John E., author
Prentice Hall Inc., 1973
Buku Teks
Freund, John E., author
Pearson Education, 2007
Multimedia
Freund, John E., author
Prentice-Hall, 1980
Buku Teks
Freund, John E., author
Pearson Prentice Hall, 2007
Buku Teks
Freund, John E., author
Prentice-Hall, 1984
Buku Teks