edited by Malcolm W. Klein
Sage, 1976
Buku Teks
Feld, barry c., author
Thomson/West, 2009
Buku Teks
Rubin, Sol, author
Oceana Publications, 1976
Buku Teks
Eldefonso, Edward
John Wiley , 1983
Buku Teks
Coffey, Alan R., author
Prentice-Hall, 1974
Buku Teks