APA (7th ed.) Citation

Johnson, J. H. (1968). Lower Cretaceous algae from Texas.

Chicago Style (17th ed.) Citation

Johnson, J. Harlan. Lower Cretaceous Algae from Texas. Golden, Colo, 1968.

MLA (9th ed.) Citation

Johnson, J. Harlan. Lower Cretaceous Algae from Texas. 1968.

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