Curtis, D. (1961). Your thoughts can change your life. Wilshire Book Co.
Chicago (17e ed.) BronvermeldingCurtis, Donald. Your Thoughts Can Change Your Life. Wilshire Book Co, 1961.
MLA (9e ed.) BronvermeldingCurtis, Donald. Your Thoughts Can Change Your Life. Wilshire Book Co, 1961.
Let op: Deze citaties zijn niet altijd 100% accuraat.