Michael, P., author
UI-Press , 1995
Buku Teks
McNaughton, S. J., author
Gadjah Mada University Press, 1990
Buku Teks
Macfadyen, A.
Pitman Publishing Corporation, 1963
Buku Teks
Sousa, John J., author
Rhode Island Consortium, 1990
Buku Teks
Watterson, Ray L., author
Burgess Publishing Comp , 1969
Buku Teks