Hubbard, C. E. (1968). Grasses: A guide to their structure, identification, uses, and distribution in the British isles (2. ed., rev. ed.). Penguin Books.
Chicago-Zitierstil (17. Ausg.)Hubbard, Charles Edward. Grasses: A Guide to Their Structure, Identification, Uses, and Distribution in the British Isles. 2. ed., rev. ed. Harmondsworth u.a: Penguin Books, 1968.
MLA-Zitierstil (9. Ausg.)Hubbard, Charles Edward. Grasses: A Guide to Their Structure, Identification, Uses, and Distribution in the British Isles. 2. ed., rev. ed. Penguin Books, 1968.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.