Hartog, J.P. Den
Dover Publications, INC, 1948
Buku Teks
Desloge, Edward, author
John Wiley & Sons, 1982
Buku Teks
Arya, Atam Parkash, author
McGraw-Hill, 1990
Buku Teks
Walker, Keith M., author
Reston Publishing, 1984
Buku Teks
Phalen, Thomas E.
Rinehart and Winston, 1965
Buku Teks