Haddi Welfarendi, author
2016
UI - Skripsi (Membership)
Sihombing, Nisle Purada, author
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2014
UI - Tesis (Membership)
Leffingwell, William Henry
McGraw-Hill , 1950
Buku Teks
Littlefield, C. L.
Prentice-Hall, 1956
Buku Teks
Wylie, Herry L.
Prentice-Hall, 1961
Buku Teks