Bartlett, C. J.
Longman, 1994
Buku Teks
editors, Rui Calcada, Raimundo Delgado, Antonio Campos e Matos
CRC Press, Taylor & Francis Group, 2009
Buku Teks
Rao, M.A.
National Book Trust, 1975
Buku Teks
Endang Susilowati
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2004
UI - Disertasi Membership
Rui Calcada, Raimundo Delgado, editor
CRC Press, Taylor & Francis Group, 2009
Buku Teks