Scientific classification of flowering plants по Nairne, Alexander Kyd

Flowering Plants. Eudicots Sapindales, Cucurbitales, Myrtaceae по Kubitzki, Klaus

Available for University of the Philippines Diliman via SpringerLink. Click here to access

Systematic botany of flowering plants a new phylogenetic approach to angiosperms of the temperate and tropical regions

The evolution and classification of flowering plants по Cronquist, Arthur

Chemotaxonomy of flowering plants по Gibbs, Ronald Darnley 1904-