Heffernan, James A.W.
W.W. Norton & Company, 1986
Buku Teks
Maimon, Elaine P., author
McGraw-Hill, 2002
Buku Teks
Maimon, Elaine P., author
McGraw-Hill , 2003
Buku Referensi
Mcmahan, Elizabeth
McGraw-Hill, 1984
Buku Teks
Levin, Gerald, author
Harcourt, Brace & World, 1966
Buku Teks