APA (7th ed.) Citation

Johnson, J. H. (1969). A review of the Lower Cretaceous algae. Colorado School of Mines.

Chicago Style (17th ed.) Citation

Johnson, J. Harlan. A Review of the Lower Cretaceous Algae. Golden: Colorado School of Mines, 1969.

MLA (9th ed.) Citation

Johnson, J. Harlan. A Review of the Lower Cretaceous Algae. Colorado School of Mines, 1969.