APA (7th ed.) Citation

Johnson, R. G., & Richardson, E. S. (1969). The morphology and affinities of Tullimonstrum.

Chicago Style (17th ed.) Citation

Johnson, Ralph G., and Eugene S. Richardson. The Morphology and Affinities of Tullimonstrum. Chicago, Ill, 1969.

MLA (9th ed.) Citation

Johnson, Ralph G., and Eugene S. Richardson. The Morphology and Affinities of Tullimonstrum. 1969.

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