王立園芸協会
1 2 “Annual Review 2013/2014”. RHS. 2014年8月24日閲覧。
↑ The Garden, August 2009, page 512 (Royal Horticultural Society)
In the beginning, by Brent Elliott, from The Garden, February 2004 The founders of the RHS
A brief history of the Society, by Brent Elliott, from The Garden, February 2004 RHS timeline
Brent Elliott: The Royal Horticultural Society, A History 1804-2004. Published by Phillimore & Co. Ltd. ISBN 1 86077 2722