APA-Zitierstil (7. Ausg.)

Willis, J. C. A manual and dictionary of the flowering plants and ferns. Cambridge Univ. Press.

Chicago-Zitierstil (17. Ausg.)

Willis, John C. A Manual and Dictionary of the Flowering Plants and Ferns. Cambridge: Cambridge Univ. Press.

MLA-Zitierstil (9. Ausg.)

Willis, John C. A Manual and Dictionary of the Flowering Plants and Ferns. Cambridge Univ. Press.