Rubel Foundation. (1999). Perspectives in Plant Ecology, Evolution and Systematics. Urban & Fischer Verlag.
Citação do estilo Chicago (17ª ed.)Rubel Foundation. Perspectives in Plant Ecology, Evolution and Systematics. Jena, Alemanha: Urban & Fischer Verlag, 1999.
Citação MLA (8ª ed.)Rubel Foundation. Perspectives in Plant Ecology, Evolution and Systematics. Urban & Fischer Verlag, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.