Caldwell, Lynton Keith
University of Chicago Press, 1944
Buku Teks
Ajeng Sharfina Adiwidya
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2017
UI - Makalah dan Kertas Kerja
Brophy, Peter
Library Association Publishing, 2002
Buku Teks SO
Richard, Paul
Omiwa Jinsha Press, 1976
Koleksi Publik
edited by Christopher Khoo, Diljit Singh and Abdus Sattar Chaudhry
Nanyang Tecnological University, 2006
Buku Referensi