Hopper, Arthur F., author
Oxford University Press, 1985
Buku Teks
Wilkins, Adam S., author
John Wiley, 1993
Buku Teks
Saunders, John W., author
Macmillan, 1970
Buku Teks
Karp, Gerald, author
McGraw-Hill, 1981
Buku Teks
Gilbert, Scott F., author
Sinauer Associattes, 2000
Buku Teks