Cita APA (7a ed.)

Fryda, J., & Blodgett, R. B. (1998). Two new cirroidean genera (Vetigastropoda, Archaeogastropoda) from the Emsian (Late Early Devonian) of Alaska with notes on the Early phylogeny of cirroidea.

Cita Chicago Style (17a ed.)

Fryda, Jiri, y Robert B. Blodgett. Two New Cirroidean Genera (Vetigastropoda, Archaeogastropoda) from the Emsian (Late Early Devonian) of Alaska with Notes on the Early Phylogeny of Cirroidea. 1998.

Cita MLA (8a ed.)

Fryda, Jiri, y Robert B. Blodgett. Two New Cirroidean Genera (Vetigastropoda, Archaeogastropoda) from the Emsian (Late Early Devonian) of Alaska with Notes on the Early Phylogeny of Cirroidea. 1998.