Various (1983). "A Regimen for Health". In G. E. R. Lloyd; J. Chadwick; W. N. Mann (eds.). Hippocratic Writings. Penguin. pp. 272–273. ISBN978-0-14-044451-3. Retrieved 6 June 2011.
Hsu, Elisabeth (2001). "Dietetics in Tang China and the first extant works of materia diatetica". Innovation in Chinese Medicine. Cambridge University Press. p. 176. ISBN0-521-80068-4. Retrieved 6 June 2011.
"Pirámide NAOS". Ministerio de Sanidad, Política Social e Igualdad (in Spanish). Gobierno de España. Archived from the original on 1 March 2011. Retrieved 11 June 2011.
ne.se
"matpyramid". Nationalencyklopedin (in Swedish). Retrieved 7 June 2011.
"Pirámide NAOS". Ministerio de Sanidad, Política Social e Igualdad (in Spanish). Gobierno de España. Archived from the original on 1 March 2011. Retrieved 11 June 2011.