APA (7th ed.) Zitazioa

Rutchinson, J. Key to the families of flowering plants of the world.

Chicago Style (17th ed.) Zitazioa

Rutchinson, J. Key to the Families of Flowering Plants of the World.

MLA (9th ed.) Zitazioa

Rutchinson, J. Key to the Families of Flowering Plants of the World.