Flanagan, William M.
McGraw-Hill , 1993
Buku Teks
Oke Dwiraswati, author
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2019
UI - Tesis (Membership)
Sussman, Ann, author
Routledge, 2015
Buku Teks
Exton, William Jr.
American Management Association , 1972
Buku Teks
Palm, William J., author
John Wiley & Sons, 1986
Buku Teks