ter Braak, C. J. F., & Šmilauer, P. (2015). Topics in constrained and unconstrained ordination. Plant ecology, 216(5), 683-696. https://doi.org/10.1007/s11258-014-0356-5
Chicago Style (17th ed.) Citationter Braak, Cajo J. F., and Petr Šmilauer. "Topics in Constrained and Unconstrained Ordination." Plant Ecology 216, no. 5 (2015): 683-696. https://doi.org/10.1007/s11258-014-0356-5.
MLA (9th ed.) Citationter Braak, Cajo J. F., and Petr Šmilauer. "Topics in Constrained and Unconstrained Ordination." Plant Ecology, vol. 216, no. 5, 2015, pp. 683-696, https://doi.org/10.1007/s11258-014-0356-5.
Warning: These citations may not always be 100% accurate.