Pittoni, Mario
The Foundation Press, 1967
Buku Teks
Berry, Carole C., 1958-2014, author
Thomson Reuters, 2009
Buku Teks
Goldfard, Ronald L., author
Random House, 1982
Buku Teks
Statsky, William P., 1943-, author
West Publishing, 1977
Buku Teks
Statsky, William P., 1943-, author
Buku Teks