APA (7th ed.) Citation

Purnell, M. A. (1992). Conodonts of the Lower Border Group and equivalent strata (Lower Carboniferous) in Northern Cumbria and the Scottish Borders, U.K (1. publ.). Royal Ontario Museum.

Chicago Style (17th ed.) Citation

Purnell, Mark A. Conodonts of the Lower Border Group and Equivalent Strata (Lower Carboniferous) in Northern Cumbria and the Scottish Borders, U.K. 1. publ. Toronto, Ontario: Royal Ontario Museum, 1992.

MLA (9th ed.) Citation

Purnell, Mark A. Conodonts of the Lower Border Group and Equivalent Strata (Lower Carboniferous) in Northern Cumbria and the Scottish Borders, U.K. 1. publ. Royal Ontario Museum, 1992.