Kagawa,Yasuo(1978).“Impact of westernization on the nutrition of Japanese: Changes in physique, cancer, longevity and centenarians”.Preventive Medicine7(2): 205–217.doi:10.1016/0091-7435(78)90246-3.PMID674107.
Position of the American Dietetic Association and Dietitians of Canada "Vegetarian diets" Journal of the American Dietetic Association Vol.103 Issue.6, June 2003, pp748-765.
Kagawa,Yasuo(1978).“Impact of westernization on the nutrition of Japanese: Changes in physique, cancer, longevity and centenarians”.Preventive Medicine7(2): 205–217.doi:10.1016/0091-7435(78)90246-3.PMID674107.