APA (7th ed.) Citation

Stebbins, G. L. (1974). Flowering plants: Evolution above the species level. Belknap Press of Harvard University Press.

Chicago Style (17th ed.) Citation

Stebbins, G. Ledyard. Flowering Plants: Evolution Above the Species Level. Cambridge, Mass: Belknap Press of Harvard University Press, 1974.

MLA (9th ed.) Citation

Stebbins, G. Ledyard. Flowering Plants: Evolution Above the Species Level. Belknap Press of Harvard University Press, 1974.