Cita APA (7a ed.)

Perring, F. H. (1970). The Flora of a changing britain. Hampton, Middlesex. Botanical Society of the British Isles.

Cita Chicago Style (17a ed.)

Perring, Franklin Hugh. The Flora of a Changing Britain. Hampton, Middlesex. Hampton, Middlesex: Botanical Society of the British Isles, 1970.

Cita MLA (9a ed.)

Perring, Franklin Hugh. The Flora of a Changing Britain. Hampton, Middlesex. Botanical Society of the British Isles, 1970.