Lumsden, E. S. (1925). The art of etching: A complete & fully illustrated description of etching, drypoint, soft-ground etching, aquatint & their allied arts, together with technical notes upon their own work by many of the leading etchers of the present time. J.B. Lippincott Co..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Lumsden, E. S. The Art of Etching: A Complete & Fully Illustrated Description of Etching, Drypoint, Soft-ground Etching, Aquatint & Their Allied Arts, Together with Technical Notes upon Their Own Work by Many of the Leading Etchers of the Present Time. Philadelphia: J.B. Lippincott Co., 1925.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Lumsden, E. S. The Art of Etching: A Complete & Fully Illustrated Description of Etching, Drypoint, Soft-ground Etching, Aquatint & Their Allied Arts, Together with Technical Notes upon Their Own Work by Many of the Leading Etchers of the Present Time. J.B. Lippincott Co., 1925.