Folts, Franklin Erton
McGraw-Hill, 1963
Buku Teks
Holden, Paul E.
Prentice-Hall, 1955
Buku Teks
Pacifico, Carl R.
John Wiley , 1981
Buku Teks
Anthony, Robert N. (Robert Newton), 1916-2006, author
Harvard University, 1952
Buku Teks
Yoder, Dale, author
Prentice-Hall, 1962
Buku Teks