Colley, Susan Jane
Prentice-Hall, , 1998
Buku Teks
Phillips, H.B. (Henry Bayard)
J. Wiley & Sons, inc.; London, Chapman & Hall, limited, 1933
Buku Teks
Spiegel, Murray R., author
McGraw-Hill, 1981
Buku Teks
Spiegel, Murray R., author
McGraw-Hill, 2009
Buku Teks
Hummel, James A., author
Addison-Wesley, 1967
Buku Teks