Eldefonso, Edward
John Wiley , 1983
Buku Teks
Sandhu, Harjit S.
Human Sciences Press, 1981
Buku Teks
Pine Forge Press, 1996
Buku Teks
Coffey, Alan R., author
Prentice-Hall, 1974
Buku Teks
David W. Springer, Albert R. Roberts, editor
Jones and Bartlett Publishers, 2011
Buku Teks