Friedl, Alfred E, author
McGraw-Hill, 2001
Buku Teks
Friedl, Alfred E., author
McGraw-Hill, 2001
Buku Teks
Abruscato, Joseph, author
Allyn and Bacon, 2010
Buku Teks
Mellon, Constance A., author
Greenwood Press, 1990
Buku Teks
Cunningham, William P., author
McGraw-Hill, Higher Education, 2009
Buku Teks