APA (7th ed.) Citation

Colbert, E. H., & Russell, D. A. (1969). The small Cretaceous dinosaur Dromaeosaurus.

Chicago Style (17th ed.) Citation

Colbert, Edwin H., and Dale A. Russell. The Small Cretaceous Dinosaur Dromaeosaurus. New York, NY, 1969.

MLA (9th ed.) Citation

Colbert, Edwin H., and Dale A. Russell. The Small Cretaceous Dinosaur Dromaeosaurus. 1969.