McVey, Ruth Thomas, author
Hraf Press, 1963
Buku Teks
Times Books International, 1990
Buku Teks
Ministry of Helath IHRD, 1998
Buku Teks
Moser, Claus A., author
Heinemann Educational Books, 1973
Buku Teks
Moser, Claus A., author
Basic Books, 1972
Buku Teks