Franklin, Jack L., author
John Wiley & Sons, 1976
Buku Teks
Lichfield, Nathaniel, author
Pergamon Press, 1975
Buku Teks
Barden, William Jr., author
Howard W. Sams & Co., 1977
Buku Teks
Ratih Maeril Wisnandari, author
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2015
UI - Skripsi Membership
Perlick, Walter W., author
Richard D. Irwin, 1981
Buku Teks