Grady, D. (1998). Dietary supplements can be dangerous to your health. Today.
Chicago (17e ed.) BronvermeldingGrady, Denise. "Dietary Supplements Can Be Dangerous to Your Health." Today 1998.
MLA (9e ed.) BronvermeldingGrady, Denise. "Dietary Supplements Can Be Dangerous to Your Health." Today, 1998.
Let op: Deze citaties zijn niet altijd 100% accuraat.