Morgans, H., & Morgans, H. S. (1997). Early to middle Jurassic stratigraphic development, vegetation and climate change in north-western Europe.
Čikaški stil citiranja (17. izdanje)Morgans, H., i Helen Sarah Morgans. Early to Middle Jurassic Stratigraphic Development, Vegetation and Climate Change in North-western Europe. 1997.
MLA način citiranja (9. izdanje)Morgans, H., i Helen Sarah Morgans. Early to Middle Jurassic Stratigraphic Development, Vegetation and Climate Change in North-western Europe. 1997.
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