edited by Henry Wechsler, Leonard Solomon, Bernard M. Kramer
Holt, Rinehart and Winston, 1970
Buku Teks
Carson, Robert C., author
Longman, 1997
Buku Teks
World Health Organization
World Health Organization, 1981
Buku Teks
Gupta, Giri Raj, author
Allyn and Bacon, 1993
Buku Teks
edited by Teresa Scheild and Tony Brown
Cambridge University Press, 2010
Buku Teks