APA (7th ed.) Zitazioa

Freek Rhebergen & Botting, J. P. (2014). A new Silurian (Llandovery, Telychian) sponge assemblage from Gotland, Sweden. Wiley Blackwell.

Chicago Style (17th ed.) Zitazioa

Freek Rhebergen eta J. P. Botting. A New Silurian (Llandovery, Telychian) Sponge Assemblage from Gotland, Sweden. [Place of publication not identified]: Wiley Blackwell, 2014.

MLA (9th ed.) Zitazioa

Freek Rhebergen eta J. P. Botting. A New Silurian (Llandovery, Telychian) Sponge Assemblage from Gotland, Sweden. Wiley Blackwell, 2014.