Cita APA (7a ed.)

Morgans, H., & Morgans, H. S. (1997). Early to middle Jurassic stratigraphic development, vegetation and climate change in north-western Europe.

Cita Chicago Style (17a ed.)

Morgans, H., y Helen Sarah Morgans. Early to Middle Jurassic Stratigraphic Development, Vegetation and Climate Change in North-western Europe. 1997.

Cita MLA (9a ed.)

Morgans, H., y Helen Sarah Morgans. Early to Middle Jurassic Stratigraphic Development, Vegetation and Climate Change in North-western Europe. 1997.