Shrode, William A., author
Florida State University, 1974
Buku Teks
Haag, Stephen, author
McGraw-Hill, 2004
Multimedia
Haag, Stephen, author
Irwin McGraw-Hill, 1998
Buku Referensi
Haag, Stephen, author
McGraw-Hill, 2000
Buku Teks
Haag, Stephen, author
McGraw-Hill, 2010
Buku Teks