490674 Alsen, P. (2006). The Early Cretaceous (Late Ryazanian - Early Hauterivian) ammonite fauna of north-east Greenland: Taxonomy, biostratigraphy, and biogeography. Oslo : Taylor & Francis.
Chicago Style (17th ed.) Citation490674 Alsen, Peter. The Early Cretaceous (Late Ryazanian - Early Hauterivian) Ammonite Fauna of North-east Greenland: Taxonomy, Biostratigraphy, and Biogeography. Oslo : Taylor & Francis, 2006.
MLA (9th ed.) Citation490674 Alsen, Peter. The Early Cretaceous (Late Ryazanian - Early Hauterivian) Ammonite Fauna of North-east Greenland: Taxonomy, Biostratigraphy, and Biogeography. Oslo : Taylor & Francis, 2006.
Warning: These citations may not always be 100% accurate.