John Stewart, editor
McGraw-Hill, 2012
Buku Teks
Devito, Joseph A., author
Harper & Row Publishers, 1986
Buku Teks
Devito, Joseph A., author
Pearson education limited , 2014
Buku Teks
Floyd, Kory, author
Mc Graw Hill, 2012
Buku Teks
Hartley, Peter, 1946-, author
Roudledge, 1993
Buku Teks