2.
AOAC International Official Methods 985.29, 991.42, 991.43, 999.03, 993.19, 997.08, 999.03, 2000.11, 2001.02, 2001.03, 2002.02, and 2009.01. Official Methods of Analysis of AOAC International, 18th Ed., 2005, Horwitz, W., ed. AOAC International, Gaithersberg, MD, U.S.A.