Wortman, Winfrey Rott
Prentice-Hall, 1997
Buku Teks
Keeton, William T.
W.W. Norton, 1970
Buku Teks
Enger, Eldon D.
McGraw-Hill, 2009
Buku Teks
Enger, Eldon D.
McGraw-Hill, Higher Education, 2009
Buku Teks
Watterson, Ray L.
Burgess Publishing Comp , 1969
Buku Teks