edited by Martin Tucker
Ungar, 1987
Buku Referensi
edited by Martin Tucker
Continuum, 1989
Buku Referensi
Stephen, Leslie, 1832-1904
University Paperbacks, 1963
Buku Teks SO
edited by Raymond Hickey
Cambridge University Press, 2010
eBooks
Richetti, John
John Wiley & Sons, 2017
Buku Teks SO