Luetkens, Charlotte, author
Nicholson, 1946
Buku Teks
Montagu, Ashley, 1905-1999, author
Macmillan, 1953
Buku Teks
Afsghar, Haleh, author
Longman, 1991
Buku Teks
Giuffré, Giulia, author
Allen & Unwin, 1990
Buku Teks
Unger, Rhoda Kesler, author
McGraw-Hill, Inc, 1992
Buku Teks