Kicklighter, Clois E., author
The Gooddhear-Willcox, 1979
Buku Teks
Jensen, Cecil, author
McGraw-Hill, 1990
Buku Teks
Jensen, Cecil, author
McGraw-Hill, 1985
Buku Teks
Cooper, Douglas, author
John & Sons, 2007
Buku Teks
Jensen, Cecil
McGraw-Hill Ryerson Limited, 1982
Buku Teks