APA (7th ed.) Citation

Kennedy, W., Landman, N., Cobban, W., & Scott, G. (2000). Late campanian (cretaceous) heteromorph ammonites from the western interior of the United States.

Chicago Style (17th ed.) Citation

Kennedy, W., N. Landman, W. Cobban, and G. Scott. Late Campanian (cretaceous) Heteromorph Ammonites from the Western Interior of the United States. 2000.

MLA (9th ed.) Citation

Kennedy, W., et al. Late Campanian (cretaceous) Heteromorph Ammonites from the Western Interior of the United States. 2000.