Dijkema, K.S. (1983). Outline of landscape and vegetation types, in: Dijkema, K.S. et al.Flora and vegetation of the Wadden Sea islands and coastal areas: final report of the section 'Flora and vegetation of the islands' of the Wadden Sea Working Group. Wadden Sea Working Group Report, 9: pp. 116-133
In: Dijkema, K.S.; Wolff, W.J. (1983). Flora and vegetation of the Wadden Sea islands and coastal areas: final report of the section 'Flora and vegetation of the islands' of the Wadden Sea Working Group. Wadden Sea Working Group Report, 9. A.A. Balkema: Rotterdam. ISBN 90-6191-059-5. 413 pp., meer
