edited by A.M. Warnes
John Wiley & Sons, 1982
Buku Teks
Taylor and Francis, 2018
Buku Teks
Darren P Smith, Nissa Finney, Keith Halfacree
Routledge, 2016
Buku Teks
edited by Denis Dwyer
Longman, 1990
Buku Teks
edited by Daniel W. Harrington, Sara McLafferty and Susan J. Elliott
Routledge, Taylor and Francis Group, 2017
Buku Teks SO