APA (7th ed.) Citation

Orange, A. (1994). Lichens on trees: A guide to some of the commonest species. National Museum of Wales.

Chicago Style (17th ed.) Citation

Orange, Alan. Lichens on Trees: A Guide to Some of the Commonest Species. Cardiff: National Museum of Wales, 1994.

MLA (8th ed.) Citation

Orange, Alan. Lichens on Trees: A Guide to Some of the Commonest Species. National Museum of Wales, 1994.

Warning: These citations may not always be 100% accurate.