Morton, A.L., author
Victor Gollancz, 1938
Buku Teks
editor-in-Chief L. Crispin Warmington
Butterworth, 1950
Buku Teks
The British Council, 1959
Buku Teks
editor, Daniel Greenberg
Sweet & Maxwell, 2017
Buku Teks
Titmuss, Richard M.
University of Toronto Press , 1962
Buku Teks