Cita APA (7a ed.)

Davis, P., & Heywood, V. (1963). Principles of angiosperm taxonomy. Oliver & Boyd.

Cita Chicago Style (17a ed.)

Davis, P.H, y V.H Heywood. Principles of Angiosperm Taxonomy. Edinburgh: Oliver & Boyd, 1963.

Cita MLA (8a ed.)

Davis, P.H, y V.H Heywood. Principles of Angiosperm Taxonomy. Oliver & Boyd, 1963.