Armstrong, Bruce K., author
Oxford University Press, 1994
Buku Teks
Armstrong, Bruce K., author
Oxford University Press, 1994
Buku Referensi
Walker, Alexander M., author
Lower Falls Epidemiology Resainces, 1991
Buku Teks
Rothman, Kenneth J., author
Lippincott Williams / Wilkins, 2008
Buku Teks
MacMahon, Brian, author
Little, Brown and Company, 1970
Buku Teks