Pratt, Julius W., author
Prentice-Hall, 1965
Buku Teks
by John M. Blum ... [et al.]
Harcourt, Brace & World, 1963
Buku Teks
Rosenberg, Norman L., author
Prentice-Hall, 1982
Buku Teks
Grattan, C. Hartley
The University of Michigan Press, 1963
Buku Teks
Austin, Erik W.
Columbia University Press, 1986
Buku Teks