Mair, Lucy
Penguin Books, 1964
Buku Teks SO
edited by Muneera Salem-Murdock and Michael M. Horowitz, with Monica Sella
Westview Press, 1990
Buku Teks SO
Rontledge, 2000
Buku Teks SO
Cochrane, Glynn
Oxford University Press, 1971
Buku Teks SO
edited by Michael M. Horowitz and Thomas M. Painter
Westview Press, 1986
Buku Teks SO