Jaccard, James, author
Wadsworth, 1983
Buku Teks
Siegel, Sidney, author
McGraw-Hill, 1956
Buku Teks
Gravetter, Frederick J., author
Wadsworth and Cengage Learning, 2009
Buku Teks
Hinkle, Dennis E., author
Houghton Mifflin, 2003
Buku Teks
Pagano, Robert R., author
Wadsworth and Cengage Learning, 2013
Buku Teks