ISBN 978-1-84545-136-3. (原始内容存档于2021-10-03). Fred Aftalion, Otto TheodorBenfey. A History of the International Chemical Industry. University of Pennsylvania
2001,第450頁 harvnb error: no target: CITEREFBenfey等2001 (help) (英文)Benfey, ed. by Otto Theodor; Morris, Peter J.T. Robert Burns Woodward : architect and artist
[2024-10-07]. ISBN 978-0-19-955431-7 –通过Google圖書 (英语). Aftalion, Fred; Otto TheodorBenfey, A History of the International Chemical Industry, Philadelphia, PA:
Burns Woodward: Architect and Artist in the World of Molecules; Otto TheodorBenfey, Peter J. T. Morris, Chemical Heritage Foundation, April 2001. Robert