AOAC SMPR® 2015.016:Standard Method Performance Requirements (SMPRs) for Determination of Vitamin D in Dietary Supplement Finished Products and Ingredients. (22nd November 2019) - Austad, John; Barrett, Brad; Betz, Joseph M; Burdette, Carolyn Quarles; Don, Clyde; Erickson, Andy; Griffiths, James; Hildreth, Jana B; Ingle, Prashant; Jennens, Martha; Ji, David; Joseph, George; et al.