APA (7th ed.) Citation

Babcock, L. E., & Feldmann, R. M. Devonian and Mississippian conulariids of North America.

Chicago Style (17th ed.) Citation

Babcock, Loren E., and Rodney M. Feldmann. Devonian and Mississippian Conulariids of North America. Pittsburgh.

MLA (9th ed.) Citation

Babcock, Loren E., and Rodney M. Feldmann. Devonian and Mississippian Conulariids of North America.

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