Sporne, K. R. The morphology of angiosperms : the structure and evolution of flowering plants / K. R. Sporne. - London : Hutchinson University Library, 1974. - 207 p. : ill. ; 23 cm. Bibliography : p. 195-199. ISBN: 0099126111 (pbk.) Subjects--Topical Terms: Angiosperms.Botany--Morphology.