Raúl E. Alcalá and César A. Domínguez. 2005. Differential selection for carnivory traits along an environmental gradient in Pinguicula moranensis. Ecology 86:26522660.
Appendix A (Table A1). Analysis of covariance of the effects of population, rosette area, and density of capture glands on the amount of prey capture of the carnivorous plant Pinguicula moranensis.