Goolaerts, S., Kennedy, W., Dupuis, C., & Steurbaut, E. (2004). Terminal Maastrichtian ammonites from the Cretaceous-Paleogene Global Stratotype Section and Point, El Kef, Tunisia.
Čikaški stil citiranja (17. izdanje)Goolaerts, S., W. Kennedy, C. Dupuis, i E. Steurbaut. Terminal Maastrichtian Ammonites from the Cretaceous-Paleogene Global Stratotype Section and Point, El Kef, Tunisia. 2004.
MLA način citiranja (9. izdanje)Goolaerts, S., et al. Terminal Maastrichtian Ammonites from the Cretaceous-Paleogene Global Stratotype Section and Point, El Kef, Tunisia. 2004.
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