Sibthorp, R. W. (1843). The true path for the true churchman wandering in the mazes of Protestantism: Exemplified in two letters in answer to the enquiry : Why have you become a Catholic? (From last rev. London ed.). Casserly & sons.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Sibthorp, Richard Waldo. The True Path for the True Churchman Wandering in the Mazes of Protestantism: Exemplified in Two Letters in Answer to the Enquiry : Why Have You Become a Catholic? From last rev. London ed. New York: Casserly & sons, 1843.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Sibthorp, Richard Waldo. The True Path for the True Churchman Wandering in the Mazes of Protestantism: Exemplified in Two Letters in Answer to the Enquiry : Why Have You Become a Catholic? From last rev. London ed. Casserly & sons, 1843.