A. Ross Gordon, author
University of Indonesia, Faculty of Humanities, 2019
Artikel Jurnal
Saman Warnakulasuriya, WM. Tilakaratne editors
Jaypee Brothers Medical Publishers, 2014
Buku Teks
edited by Robert Perks and Alistair Thomson
Routledge, 1998
Buku Teks
Bunting, Russell W.
Lea & Febiger, 1962
Buku Teks
Michael Glick, editor
Quintessence Publishing, 2014
Buku Teks