Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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