edited by Howard Giles and W. Peter Robinson
John Wiley & Sons, 1990
Buku Referensi
edited by Anna M. Babel
Cambridge University Press, 2016
Buku Teks
Jahr, Ernst Hakon, author
Edinburgh University Press Ltd, 2014
eBooks
Heller, Monica, author
Routledge, Taylor & Francis Group, 2018
Buku Teks
Pelita Alreszika Harira, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2021
UI - Makalah dan Kertas Kerja