edited by Susan M. Hincliff
Churchill livingstone , 1979
Buku Teks
Bellings, Diane M.
Saunders Elsevier, 2009
Buku Teks
Tornyay, Rheba de
John Wiley & Sons, 1987
Buku Teks SO
Billings, Diane M.
W.B. Saunders , 1998
Buku Teks
Helen L. Van Hoozer [and others]
Appleton Century Crofts, 1987
Buku Teks