Olds, Anita Rui
McGraw-Hill, 2001
Buku Referensi
by Karen A. Piotrowski ... [et al.]
Elsevier Mosby, 2011
Buku Teks
King, Maurice H. (Maurice Henry)
Univ. of Malaya, 1979
Buku Teks
Lewer, Helen
Macmillan, 1983
Buku Teks
Davies, Douglas, 1942-
The Guilford Press, 2004
Buku Teks