Fisher, B. Aubrey, 1937-
McGraw-Hill, 1980
Buku Teks
Ellis, Donald G.
McGraw-Hill, 1994
Buku Teks
edited by Hermann Brandstatter
Academic Press, 1982
Buku Teks
Gulley, Halbert E.
Holt, Rinehart and Winston, 1977
Buku Teks
Van de Ven, Andrew H.
Kent State University Press, 1974
Buku Teks