Curtis, D. (1961). Your thoughts can change your life. Wilshire Book Co.
Chicago Style (17. basım) AtıfCurtis, Donald. Your Thoughts Can Change Your Life. Wilshire Book Co, 1961.
MLA (9th ed.) AtıfCurtis, Donald. Your Thoughts Can Change Your Life. Wilshire Book Co, 1961.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..