APA (7th ed.) Citation

(1991). Graptolites: Writing in the rocks (1. publ.). Boydell Press.

Chicago Style (17th ed.) Citation

Graptolites: Writing in the Rocks. 1. publ. Woodbridge: Boydell Press, 1991.

MLA (9th ed.) Citation

Graptolites: Writing in the Rocks. 1. publ. Boydell Press, 1991.

Warning: These citations may not always be 100% accurate.