Sampson, Edward G.
John Wiley & Sons, 1976
Buku Teks
edited by Raymond Cochrane and Douglas Carrol
Falmer Press, 1991
Buku Teks
DeLamater, John D.
Colorado Westview Press, 2014
Buku Teks
Baron, Robert A.
Pearson, 2009
Buku Teks
Franzoi, Stephen L.
McGraw-Hill, Higher Education, 2009
Buku Teks