Prentice-Hall, 1970
Buku Teks
Shavelson, Richard J., author
Allyn and Bacon , 1988
Buku Teks
Gravetter, Frederick J., author
CT Cengage Learning, 2016
Buku Teks
Gravetter, Frederick J., author
Cengage, 2018
Buku Teks
Gravetter, Frederick J., author
Wadsworth, 2012
Buku Teks