editor, J.A.N. Lee
Fitzroy Dearborn, 1995
Buku Referensi
Clason, W. E., 1898-, author
Elsevier Scientific Publishing, 1976
Buku Referensi
F. Watts, 1961
Buku Teks
edited by Anton Wagner
Canadian Theatre Review Publications, 1979
Buku Teks
Goudsblom, Johan, author
Random House, 1967
Buku Teks