APA استشهاد

Gunnell, G. F. (2001). Eocene biodiversity: Unusual concurrences and rarely sampled habitats. Kluwer Academic.

استشهاد بنمط شيكاغو

Gunnell, Gregg F. Eocene Biodiversity: Unusual Concurrences and Rarely Sampled Habitats. New York: Kluwer Academic, 2001.

MLA استشهاد

Gunnell, Gregg F. Eocene Biodiversity: Unusual Concurrences and Rarely Sampled Habitats. Kluwer Academic, 2001.