Cita APA (7th ed.)

Davis, P. H., & Cullen, J. (1965). The identification of flowering plant families. Oliver and Boyd.

Cita Chicago (17th ed.)

Davis, P. H., i J. Cullen. The Identification of Flowering Plant Families. Edinburgh and London: Oliver and Boyd, 1965.

Cita MLA (9th ed.)

Davis, P. H., i J. Cullen. The Identification of Flowering Plant Families. Oliver and Boyd, 1965.