Sotheby, S. L. (1858). Principia typographica: The block-books, or xylographic delineations of scripture history; issued in Holland, Flanders and Germany, during the fifteenth century, exemplified and considered in connexion with the origin of printing. To which is added an attempt to elucidate the character of the paper-marks of the period. Printed for the author by W. McDowall.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Sotheby, Samuel Leigh. Principia Typographica: The Block-books, or Xylographic Delineations of Scripture History; Issued in Holland, Flanders and Germany, During the Fifteenth Century, Exemplified and Considered in Connexion with the Origin of Printing. To Which Is Added an Attempt to Elucidate the Character of the Paper-marks of the Period. London: Printed for the author by W. McDowall, 1858.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Sotheby, Samuel Leigh. Principia Typographica: The Block-books, or Xylographic Delineations of Scripture History; Issued in Holland, Flanders and Germany, During the Fifteenth Century, Exemplified and Considered in Connexion with the Origin of Printing. To Which Is Added an Attempt to Elucidate the Character of the Paper-marks of the Period. Printed for the author by W. McDowall, 1858.