Guerra, F. The pre-columbian mind: A study into the aberrant nature of sexual drives, drugs affecting behaviour and the attitude towards life and death, with a survey of psychotherapy in pre-columbian America.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Guerra, Francisco. The Pre-columbian Mind: A Study into the Aberrant Nature of Sexual Drives, Drugs Affecting Behaviour and the Attitude Towards Life and Death, with a Survey of Psychotherapy in Pre-columbian America.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Guerra, Francisco. The Pre-columbian Mind: A Study into the Aberrant Nature of Sexual Drives, Drugs Affecting Behaviour and the Attitude Towards Life and Death, with a Survey of Psychotherapy in Pre-columbian America.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.