Cita APA (7th ed.)
Kozlowska-Dawidziuk, A., & Lenz, A. (2004). Ludlow and Pridoli (Upper Silurian) Graptolites from the Arctic Islands, Canada. NRC Research Press.
Cita Chicago (17th ed.)
Kozlowska-Dawidziuk, Anna, i Alfred Lenz. Ludlow and Pridoli (Upper Silurian) Graptolites from the Arctic Islands, Canada. Ottawa: NRC Research Press, 2004.
Cita MLA (9th ed.)
Kozlowska-Dawidziuk, Anna, i Alfred Lenz. Ludlow and Pridoli (Upper Silurian) Graptolites from the Arctic Islands, Canada. NRC Research Press, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.