Percy Allan
- The Pyrmont Bridge, Sydney, New South Wales. Dans: Minutes of the Proceedings of the Institution of Civil Engineers, v. 170, n. 1907-4 ( 1907), pp. 137-158, appendix, plate. (1907):
- Timber Bridge Construction in New South Wales. Dans: Journal & Proceedings of the Royal Society of New South Wales, v. 29 ( 1895). (1895):