APA (7th ed.) Citation

Hall, A. D. (1940). The genus Tulipa. The Royal Horticultural Society.

Chicago Style (17th ed.) Citation

Hall, A. Daniel. The Genus Tulipa. London: The Royal Horticultural Society, 1940.

MLA (9th ed.) Citation

Hall, A. Daniel. The Genus Tulipa. The Royal Horticultural Society, 1940.

Warning: These citations may not always be 100% accurate.