1. AACC (2000). In Niacin-microbiological method AACC Methods 86-51 and 86-50A (reapproved 3 November 1999) (10th ed.). St Paul, MN: American Association of Cereal Chemists Inc.
2. AOAC (2000). Methods 985.34, 944.13, 968.32 and 975.41. In W. Horwitz, Official methods of analysis (17th ed.). Gaithersburg, MD: Association of Official Analytical Chemists International.
3. Ball, G. F. M. (1998). Niacin and tryptophan. In Bioavailability and analysis of vitamins in foods (pp. 319–359). London: Chapman & Hall.
4. Liquid chromatographic analysis of niacin in fortified food products;Chase;Journal of the Association of Official Analytical Chemists International,1993
5. Friedrich, W. (1988). Niacin: nicotinic acid, nicotinamide, NAD(P). In Vitamins (pp. 473–542). Berlin: Walter de Gruyter.