Giovannitti, Len
Coward-McCann, 1965
Buku Teks
Berg, Bruce L. (Bruce Lawrence), 1954-, author
Allyn and Bacon, 1992
Buku Teks
Bloomberg, Marry, author
Libraries Unlimited, 1985
Buku Teks
Sullivan, John L., author
McGraw-Hill, 1977
Buku Teks
Friedman, Lawrence M., 1930-, author
Tatanusa, 2001
Buku Teks