1. LL Christensen, and CS. Smith, 1968 . The complete kitchen guide . New York: Grosset and Dunlop. 138 p.
2. M. Given, and JG Ferguson, 1959 . In: Meta Given's modern encyclopedia of cooking . Chicago: J. G. Ferguson Publishing Co.p288 -90 .
3. Problems encountered in the commercial utilization of frying fats
4. [JOCS] Japan Oil Chemists' Society., 1996 . In: Standard method for the analysis of fats oils and related materials . Tokyo, Japan: Japan Oil Chemists' Soc. 1 -1 .