Janis, Richard R., author
Pearson Prentice Hall, 2009
Buku Teks
Janis, Richard R., author
Massachusetts Pearson, 2014
Buku Teks
Hall, Fred
Butterworth, 1981
Buku Teks
Gambhir, M.L., author
Tata McGraw-Hill, 2011
Buku Teks
McGuinness, William J., author
John Wiley & Sons, 1980
Buku Teks