Ferraro, Gary P., author
Delmar Cengage Learning, 2014
Buku Teks
Charles A Gallagher, editor
McGraw-Hill, 2012
Buku Teks
Lewis, Barry, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Keenleyside, Anne, author
W. Ross MacDonald School Resource Services Library, 2015
Buku Teks
Eckhardt, Robert B., author
McGraw-Hill, 1979
Buku Teks