Epidemiology
Buku Teks
Gordis, Leon
Epidemiology
Saunders Elsevier, 1996
Buku Teks
Gordis, Leon
Epidemiology
Saunders Elsevier, 2009
Buku Teks
Merriam-Webster's collegiate encyclopedia
Merriam-Webster, 2000
Buku Referensi
Webster's new collegiate dictionary
G & C Merriam Co., 1961
Buku Referensi