Vigue, Jordi, author
Chamberlan Press, 2015
Buku Referensi
Shier, David, author
McGraw-HIll. , 2001
Buku Teks
general editor: Thomas McCracken ; contributing editor: Richard Walker ; foreword: John F. Morris
Lustre Press, 1999
Buku Referensi
McCracken, Thomas
Barnes & Noble Books, 1999
Multimedia
Craft, Roger C., author
John Wiley & Sons, 1979
Buku Teks