CROUCH, Neil R. Ferns of Southern Africa : a comprehensive guide. 1st pub. Cape Town : Struik Nature, 2011. 776 s. Dostupné na internetu: <http://external.dandelon.com/download/attachments/dandelon/ids/DE00629839D1E74BB357AC125796500532639.pdf> ISBN 978-1-77007-910-6.