Dawson, Jonathan, author
Short Run Press, 1990
Buku Teks
Palicka, V. John, author
McGraw-Hill, 2012
Buku Teks
Frederick E. Giesecke [and others]
Pearson education International, Prentice Hall, 2009
Buku Teks
Stapf, Helmut
"Leipzig: Edition, 1967",
Buku Teks
Thomas, T.A.
McGraw-Hill, 1978
Buku Teks