Springer, Steve
McGraw-Hill, 2011
Buku Teks
Springer, Steve
McGraw-Hill, 2011
Buku Teks
Meade, Richard A.
Belmont, 1964
Buku Teks
Bowden, John
Comwell Press, 1994
Buku Referensi
Pasaribu, Glenda Joy Lamhot Taruli
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2017
UI - Tesis Membership