APA (7th ed.) Citation

Stebbins, G. L. (1974). Flowering plants: Evolution above the species level. Belknap Pr.

Chicago Style (17th ed.) Citation

Stebbins, George Ledyard. Flowering Plants: Evolution Above the Species Level. Cambridge, Mass: Belknap Pr, 1974.

MLA (9th ed.) Citation

Stebbins, George Ledyard. Flowering Plants: Evolution Above the Species Level. Belknap Pr, 1974.

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