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