Kateman, G.
John Wiley & Sons, 1981
Buku Teks
Kateman, G.
John Wiley & Sons, 1993
Buku Teks
American Public Health Association, 1978
Buku Teks
Hector, Terry
John Wiley & Sons, 1986
Buku Teks
edited by Helmut Gilnzler and Alex Williams
Wiley-VCH, 2001
Buku Referensi