Cita APA (7a ed.)

Heywood, V. H., Brummitt, R. K., Culham, A., & Seberg, O. (2007). Flowering plant families of the world. A Firefly Book.

Cita Chicago Style (17a ed.)

Heywood, V H., R K. Brummitt, A. Culham, y O. Seberg. Flowering Plant Families of the World. Ontario: A Firefly Book, 2007.

Cita MLA (8a ed.)

Heywood, V H., et al. Flowering Plant Families of the World. A Firefly Book, 2007.