Allen, Carleton Kemp, Sir
Stevens & Sons Limited, 1954
Buku Teks
Allen, Carleton Kemp, Sir
The Clarendon Press, 1964
Buku Teks
edited by David Nice
Councils and Education Press, 1986
Buku Teks
editor, Daniel Greenberg
Sweet & Maxwell, 2017
Buku Teks
Keenan, Denis T., author
Pitman, 1970
Buku Teks