Hunningher, B.
International Theatre Bookshop, 1983
Buku Teks
Macgowan, Kenneth, author
Prentice-Hall, 1959
Buku Teks
Hall, Donald
John Wiley & Sons, 1987
Buku Teks
Parkin, P. H.
Faber and Faber, 1969
Buku Teks
Egan, M. David
McGraw-Hill, 1988
Buku Teks