1. M.A. Amerine, R.M. Pangborn, and E.B. Roessler, 1965 . "Principles of Sensory Evaluation of Food ," P. 308 . Academic Press, New York.
2. AMSA . 1978 . Guidelines for cookery and sensory evaluation of meat , p.7 . National Livestock and Meat Board, Chicago, IL.
3. ASTM Committee E-18 . 1968 . Manual on sensory testing methods, STP 434. , p.14 . Am. Soc. for Testing and Materials, Philadelphia, Pa.