Kennedy, W., Landman, N., Cobban, W., & Scott, G. (2000). Late campanian (cretaceous) heteromorph ammonites from the western interior of the United States.
Čikaški stil citiranja (17. izdanje)Kennedy, W., N. Landman, W. Cobban, i G. Scott. Late Campanian (cretaceous) Heteromorph Ammonites from the Western Interior of the United States. 2000.
MLA način citiranja (9. izdanje)Kennedy, W., et al. Late Campanian (cretaceous) Heteromorph Ammonites from the Western Interior of the United States. 2000.
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