edited by David Bridges
Routledge, 1997
Buku Referensi
Heater, Derek
Longman, 1990
Buku Teks SO
edited by David Bridges
Routledge, 1997
Buku Teks
Pepper, Suzanne
Cambridge University Press, 2000
Buku Teks
Akbar Ainur Pamungkas
Fakultas Kedokteran Universitas Indonesia, 2022
UI - Tesis Membership