Potter, Hillary, 1969- author
Routledge, 2015
Buku Teks
edited by Albert J. Mills
Emerald, 2017
eBooks
Rini Nurfitriani Mustari
UI - Makalah dan Kertas Kerja
Offermans, Cyrille
De Bezige Bij, 1982
Buku Teks
Geuss, Raymond
Cambridge University Press, 1999
Buku Teks