Cita APA (7a ed.)

Harder, L. D., & Barrett, S. C. H. (2006). Ecology and evolution of flowers.

Cita Chicago Style (17a ed.)

Harder, Lawrence D., y Spencer Charles Hilton Barrett. Ecology and Evolution of Flowers. 2006.

Cita MLA (9a ed.)

Harder, Lawrence D., y Spencer Charles Hilton Barrett. Ecology and Evolution of Flowers. 2006.