edited by Susan Sheridan
Verso, 1988
Buku Teks SO
White, James B.
University of Chicago Press, 1990
Buku Teks
Kiernan, Brian
Oxford University Press, 1974
Buku Teks
Wilcocks, Charles
Oxford University Press, 1950
Buku Teks
Hill, W.F.
Garden Art Press , 1995
Buku Referensi