staff of Research and Education Association, Max Fogiel, director
California Research and Education Association, 1987
Buku Teks
translated by Zai Jiangyue and Mou Aipeng
Guangxi Normal University Press, 2010
Buku Teks
World Health Organization, 1955
Buku Teks
Stroud, K. A., author
Erlangga, 2003
Buku Teks
R. Soerjatin
Pradnya Paramita, 1987
Buku Teks