Harris, Robert A., author
Pyrczak Pub, 2011
Buku Teks
Johson, Jean
Bedford Books, 1987
Buku Teks
Van Nostrand Reinhod, 1975
Buku Teks
Remington, Joseph Price, 1847-1918, author
Pharmaceutical Press, 2013
Buku Teks
prepared under the editorial supervision of In Plain English, Inc.
Macmillan, 1996
Buku Referensi