Black, Michael J.; J. Derek Bewley, Peter Hunter (2006). The Encyclopedia of Seeds - Science, Technology and Uses. CAB International. Consultado el 9 de julio de 2009. «The embryo is that part of the seed which germinates and grows into the vegatative plant. In cereal grains, embryos (germs)...»La referencia utiliza el parámetro obsoleto |coautores= (ayuda)
Ellis, Carleton; Annie Louise Macleod (1922). Vital Factors of Foods - Vitamins and Nutrients. D. Van Nostrand Company. Consultado el 9 de julio de 2009. «...the germ or embryo of the grain...»
Keville, Kathi; Mindy Green (16 de diciembre de 2008). Aromatherapy. The Crossing Press. ISBN1580911897. Consultado el 9 de julio de 2009. «Table: Vegetable Oil Stability [includes wheat germ]».