Butterworth-Heinemann, 1993
Buku Teks
Callahan, Robert E.
Charles E. Merrill, 1988
Buku Teks
Shepherd, Elizabeth J., 1960-
Facet Publishing, 2003
Buku Referensi
United States of American Department of health Education and Welfare
US. Department of Health, 1976
Buku Teks
Smallwood, Robert F., 1959-,author
John Wiley & Sons, 2013
Buku Teks