Barlow, F. (1952). Mental prodigies: An enquiry into the faculties of arithmetical, chess and musical prodigies, famous memorizers, precocious children and the like, with numerous examples of "lightning" calulations and mental magic. Hutchinson's Scientific and Technical Publications.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Barlow, Fred. Mental Prodigies: An Enquiry into the Faculties of Arithmetical, Chess and Musical Prodigies, Famous Memorizers, Precocious Children and the like, with Numerous Examples of "Lightning" Calulations and Mental Magic. London: Hutchinson's Scientific and Technical Publications, 1952.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Barlow, Fred. Mental Prodigies: An Enquiry into the Faculties of Arithmetical, Chess and Musical Prodigies, Famous Memorizers, Precocious Children and the like, with Numerous Examples of "Lightning" Calulations and Mental Magic. Hutchinson's Scientific and Technical Publications, 1952.