$a Floral biology : studies on floral evolution in animal-pollinated plants / ed. by David G. Lloyd, Spencer C. H. Barrett. - New York, 1996. $b (University of Toronto, Canada)
670
$a LOCIS online $b (Barrett, Spencer Charles Hilton)
670
$a Flowering plants of the world / ed.: V. H. Heywood [et. al.]. - Oxford, 1978. $b Współprac.