by George E. Miller ... [et al.]
Harvard University Press, 1968
Buku Teks
Watts, Nancy T.
Churchill Livingstone , 1990
Buku Teks
Cope, Oliver M.D.
Lippincott Comp., 1968
Buku Teks
by Ascher J. Segall ... [et al.]
John Wiley & Sons, 1975
Buku Teks
Guilbert, J.J.
World Health Organization, 1998
Buku Referensi