Handbook of the British flora: a description of the flowering plants and ferns indigenous to, or naturalised in, the British Isles for the use of beginners and amateurs

Bentham, George, (1800-1884) and Hooker, Joseph Dalton, Sir (επιμ.) , “Handbook of the British flora: a description of the flowering plants and ferns indigenous to, or naturalised in, the British Isles for the use of beginners and amateurs,” Δημόσια Βιβλιοθήκη Δράμας, accessed October 31, 2025, http://drama.locloudhosting.net/items/show/54.