APA (7th ed.) Citation

Sá, A., Pereira, S., Rábano, I., & Gutiérrez-Marco, J. C. Giant trilobites and Other Middle Ordovician Invertebrate Fossils from the Arouca UNESCO Global Geopark, Portugal. OICC Press.

Chicago Style (17th ed.) Citation

Sá, Artur, Sofia Pereira, Isabel Rábano, and Juan Carlos Gutiérrez-Marco. Giant Trilobites and Other Middle Ordovician Invertebrate Fossils from the Arouca UNESCO Global Geopark, Portugal. OICC Press.

MLA (9th ed.) Citation

Sá, Artur, et al. Giant Trilobites and Other Middle Ordovician Invertebrate Fossils from the Arouca UNESCO Global Geopark, Portugal. OICC Press.