APA (7th ed.) Citation

Ruedemann, R. (1947). Graptolites of North America. [Waverly Press].

Chicago Style (17th ed.) Citation

Ruedemann, Rudolf. Graptolites of North America. [Baltimore]: [Waverly Press], 1947.

MLA (9th ed.) Citation

Ruedemann, Rudolf. Graptolites of North America. [Waverly Press], 1947.

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