General

📖 Freshwater Life: Britain & Northern Europe by Malcolm Greenhalgh & Denys Ovenden (Collins: 2007) [Adv]

↯Natural History Museum [Adv]

Plant Galls

📖British Plant Galls by Margaret Redfern and Peter Shirley (FSC 2nd ed, 2011) [Adv]

📖Britain’s Plant Galls: A photographic guide by Michael Chinery (WILDGuides, 2011) [Adv]

📖Plant Galls (FSC Fold-out chart 2005) [Adv]