Morgans, H., & Morgans, H. S. (1997). Early to middle Jurassic stratigraphic development, vegetation and climate change in north-western Europe.
Chicago Style aipamenaMorgans, H., and Helen Sarah Morgans. Early to Middle Jurassic Stratigraphic Development, Vegetation and Climate Change in North-western Europe. 1997.
MLA aipamenaMorgans, H., and Helen Sarah Morgans. Early to Middle Jurassic Stratigraphic Development, Vegetation and Climate Change in North-western Europe. 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.