Title: Handbook of North European Garden Plants: With Keys to Families and Genera, Author: James Cullen
Title: Plant Biotechnology in Ornamental Horticulture / Edition 1, Author: Yi Li
Title: Breeding For Ornamentals: Classical and Molecular Approaches / Edition 1, Author: A. Vainstein
Title: Manual of Herbaceous Ornamental Plants / Edition 4, Author: Steven M. Still