Spichiger, R. (2004). Systematic botany of flowering plants: A new phylogenetic approach to angiosperms of the temperate and tropical regions. Science Pub.
Chicago-viite (17. p.)Spichiger, Rodolphe-Edouard. Systematic Botany of Flowering Plants: A New Phylogenetic Approach to Angiosperms of the Temperate and Tropical Regions. Enfield, NH: Science Pub, 2004.
MLA-viite (9. p.)Spichiger, Rodolphe-Edouard. Systematic Botany of Flowering Plants: A New Phylogenetic Approach to Angiosperms of the Temperate and Tropical Regions. Science Pub, 2004.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.