Smith, Ewart
Sun Books, 1989
Buku Teks
Evatt, Herbert Vere, 1894-1965
Angus and Robertson, 1954
Buku Teks
Crisp, L. F. (Leslie Finlay), author
Longman Chesire, 1965
Buku Teks
Crisp, L. F. (Leslie Finlay), author
Longman, 1973
Buku Teks
edited by Henry Mayer
F.W. Chesire, 1966
Buku Teks