The Gardens Trust - http://thegardenstrust.org/
Yorkshire Gardens Trust - http://www.yorkshiregardenstrust.org.uk/
Japanese Garden Society - http://www.jgs.org.uk/
Historic England - https://historicengland.org.uk/
Parks & Gardens UK - http://www.parksandgardens.org/
Pearson Education - http://www.pearsoned.co.uk/
Oxbow Books - http://www.oxbowbooks.com/
Amazon Author's page UK - Louise Wickham
Amazon Author's page US - Louise Wickham