Heck, J. G. (2003). The Complete encyclopedia of illustration: Containing all the original illustrations from the 1851 edition of "The Iconographic encyclopedia of science, literature, and art," with editorial revisions for easy reference. Gramercy Books.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Heck, J. G. The Complete Encyclopedia of Illustration: Containing All the Original Illustrations from the 1851 Edition of "The Iconographic Encyclopedia of Science, Literature, and Art," with Editorial Revisions for Easy Reference. New York: Gramercy Books, 2003.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Heck, J. G. The Complete Encyclopedia of Illustration: Containing All the Original Illustrations from the 1851 Edition of "The Iconographic Encyclopedia of Science, Literature, and Art," with Editorial Revisions for Easy Reference. Gramercy Books, 2003.