Ahuja, Hira N., author
John Wiley & Sons, 1980
Buku Teks
Matz, Adolph, author
Ohio South-Western Publishing , 1967/1991
Buku Teks
Gillespie, Cecil, author
Prentice-Hall, 1957
Buku Teks
Dopson, Lea R., author
John Wiley & Sons, 2008
Buku Teks
Criner, E.A., author
Van Nostrand Reinhold, 1984
Buku Teks