APA (7th ed.) Citation

Lenz, A. C. (2004). Ludlow and Pridoli (Upper Silurian) graptolites from the Arctic Islands, Canada. NRC Research Press.

Chicago Style (17th ed.) Citation

Lenz, Alfred C. Ludlow and Pridoli (Upper Silurian) Graptolites from the Arctic Islands, Canada. Ottawa: NRC Research Press, 2004.

MLA (9th ed.) Citation

Lenz, Alfred C. Ludlow and Pridoli (Upper Silurian) Graptolites from the Arctic Islands, Canada. NRC Research Press, 2004.

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