Meng, Peter Lai Hock, author
ISESAS, 2007
Buku Teks
Butterworth-Heinemann, 1993
Buku Teks
Shepherd, Elizabeth J., 1960-, author
Facet Publishing, 2003
Buku Referensi
Callahan, Robert E., author
Charles E. Merrill, 1988
Buku Teks
United States of American Department of health Education and Welfare
US. Department of Health, 1976
Buku Teks