Vierck, E. (1995). Health smart: Your personal plan to living longer and healthier. Prentice Hall.
Dyfyniad Arddull ChicagoVierck, Elizabeth. Health Smart: Your Personal Plan to Living Longer and Healthier. USA: Prentice Hall, 1995.
Dyfyniad MLAVierck, Elizabeth. Health Smart: Your Personal Plan to Living Longer and Healthier. Prentice Hall, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.