Hewitt, D. W. (1988). Longer Life, radiant health and dinamic living The easy way prevent cancer stroke heart attackes other diseases. Weimar.
Lua i Stíl Chicago (17ú heag.)Hewitt, Donald W. Longer Life, Radiant Health and Dinamic Living The Easy Way Prevent Cancer Stroke Heart Attackes Other Diseases. Weimar, 1988.
Lua MLA (9ú heag.)Hewitt, Donald W. Longer Life, Radiant Health and Dinamic Living The Easy Way Prevent Cancer Stroke Heart Attackes Other Diseases. Weimar, 1988.
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