Delphin, Patricia
Virgnia Reston publishing 1983 , 1983
Buku Teks
Puetz, Belinda E., author
Aspen Publishers, 1981
Buku Teks
Apps, Jerold W., author
Jossey-Bass Publishers, 1985
Buku Teks
Abbatt, Fred, author
World Health Organization, 1988
Buku Teks
Ewen, Dale, author
Prentice-Hall, 1983
Buku Teks