De Hertogh, A., & Le Nard, M. (1993). The Physiology of flower bulbs: A comprehensive treatise on the physiology and utilization of ornamental flowering bulbous and tuberous plants. Elsevier.
Chicago Style (17th ed.) CitationDe Hertogh, August, and Marcel Le Nard. The Physiology of Flower Bulbs: A Comprehensive Treatise on the Physiology and Utilization of Ornamental Flowering Bulbous and Tuberous Plants. Amsterdam, The Netherlands: Elsevier, 1993.
MLA (9th ed.) CitationDe Hertogh, August, and Marcel Le Nard. The Physiology of Flower Bulbs: A Comprehensive Treatise on the Physiology and Utilization of Ornamental Flowering Bulbous and Tuberous Plants. Elsevier, 1993.
Warning: These citations may not always be 100% accurate.