Abramson, Adolph G., author
John Wiley & Sons, 1956
Buku Teks
Hanke, John E., author
Pearson - Prentice Hall, 2009
Buku Teks
Bratt, Elmer C., author
McGraw-Hill, 1958
Buku Teks
Hanke, John E., author
Prentice Halls, 2001
Buku Teks
Hanke, Jonh E., author
Pearson Prentice Hall, 2005
Buku Teks