Gilmore, Thomas North, author
Jossey Bass, 1988
Buku Teks
Chip Heath and Dan Heath
Broadway Books, 2010
Buku Teks
Rinjani Ramadhani, author
Fakultas Psikologi Universitas Indonesia, 2013
UI - Skripsi (Membership)
McCalman, James
Paul Chapman Production, 1992
Buku Teks
Alin Yorica, author
2016
UI - Tesis (Membership)