Cita APA (7a ed.)

Eldredge, N., & Branisa, L. (1980). Calmoniid trilobites of the lower devonian Scaphiocoelia zone of Bolivia, with remarks on related species. American Museum of Natural History.

Cita Chicago Style (17a ed.)

Eldredge, Niles, y Leonardo Branisa. Calmoniid Trilobites of the Lower Devonian Scaphiocoelia Zone of Bolivia, with Remarks on Related Species. New York: American Museum of Natural History, 1980.

Cita MLA (8a ed.)

Eldredge, Niles, y Leonardo Branisa. Calmoniid Trilobites of the Lower Devonian Scaphiocoelia Zone of Bolivia, with Remarks on Related Species. American Museum of Natural History, 1980.