1. Adamson, R.S. 1922. Studies of the Vegetation of the English Chalk. Journal of Ecology 9 (2): 113–219.
2. BAAS. 1884–1914. Reports of the Meeting of the British Association for the Advancement of Science. London: J. Murray.
3. Blackman, F.F., and Arthur G. Tansley. 1905. Ecology in its Physiological and Phytotopographical Aspects: Research Methods in Ecology, by F. E. Clements. New Phytologist 4 (9): 199–203.
4. Carey, Alfred E., and Francis W. Oliver. 1918. Tidal Lands: A Study of Shore Problems. London: Blackie & Son.
5. Clements, Frederic E. 1904. The Development and Structure of Vegetation. Vol. 7. Studies in the Vegetation of the State, Botanical Survey of Nebraska. Lincoln, Nebraska: University of Nebraska.