APA-viite (7. p.)

(2000). Isotopic evidence for temperature variation during the early Cretaceous (late Ryazanian–mid-Hauterivian).

Chicago-viite (17. p.)

Isotopic Evidence for Temperature Variation During the Early Cretaceous (late Ryazanian–mid-Hauterivian). 2000.

MLA-viite (9. p.)

Isotopic Evidence for Temperature Variation During the Early Cretaceous (late Ryazanian–mid-Hauterivian). 2000.