APA (7th ed.) Citation

Hawksworth, D. L., & Seaward, M. R. D. (1977). Lichenology in the British Isles 1568-1975: An historical and bibliographical survey. the Richmond Publishing Co. Ltd.

Chicago Style (17th ed.) Citation

Hawksworth, D. L., and Mark R. D. Seaward. Lichenology in the British Isles 1568-1975: An Historical and Bibliographical Survey. Richmond: the Richmond Publishing Co. Ltd, 1977.

MLA (9th ed.) Citation

Hawksworth, D. L., and Mark R. D. Seaward. Lichenology in the British Isles 1568-1975: An Historical and Bibliographical Survey. the Richmond Publishing Co. Ltd, 1977.