APA Style
Feldmann, E, G., Blockstein, W, L. (1990).
Handbook of Nonprescription Drug (9th ed.).
Washington DC:
American Pharmaceutical Association.
MLA Style
Feldmann, Edward, G.., Blockstein, William, L..
"Handbook of Nonprescription Drug".
9th ed.
Washington DC:
American Pharmaceutical Association,
1990.
print.