Kessler-Harris, Alice
Oxford University Press, 1983
Buku Teks
Maule, Frances
Harper & Brother , 1957
Buku Teks
edited by Pat Mahony, Christine Zmroczek
Taylor and Francis, 1997
Buku Teks
Mayfield Publishing Company, 1978
Buku Teks
Rodgers, Harrell R.
M.E. Sharpe, Inc., 1986
Buku Teks