APA (7th ed.) Citation

Royal Horticultural Society. Encyclopedia of conifers: A comprehensive guide to cultivars and species. Royal Horticultural Soc. [u.a.].

Chicago Style (17th ed.) Citation

Royal Horticultural Society. Encyclopedia of Conifers: A Comprehensive Guide to Cultivars and Species. London: Royal Horticultural Soc. [u.a.].

MLA (9th ed.) Citation

Royal Horticultural Society. Encyclopedia of Conifers: A Comprehensive Guide to Cultivars and Species. Royal Horticultural Soc. [u.a.].

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