Abercrombie, Stanley, author
MIT Press, c1995
Buku Teks
Aspinall, George
ABC Enterprises , 1984
Buku Teks
Mallaby, George
Leo Cooper, 1972
Buku Teks
Stevenson, Augusta, author
Bobbs-Merrill, 1959
Buku Teks
Laski, Marghanita, author
Thames & Hudson, 1973
Buku Teks