أول آلة لصناعة الورق

1. Robert, Louis-Nicolas [Internet]. Europeana. [cited 2023 Mar 29]. Available from: هنا
2. The advent of the paper machine: Robert C. Williams museum of papermaking [Internet]. Georgia Institute of Technology. [cited 2023 Mar 29]. Available from: هنا
3. Nicholas-Louis Robert (1761–1828) [Internet]. ERIH. [cited 2023 Mar 29]. Available from: هنا