Cita APA (7a ed.)

Dunagan, S. P. (1999). A North American freshwater sponge (Eospongilla Morrisonensis new genus and species) from the Morrison Formation (Upper Jurassic), Colorado.

Cita Chicago Style (17a ed.)

Dunagan, Stan P. A North American Freshwater Sponge (Eospongilla Morrisonensis New Genus and Species) from the Morrison Formation (Upper Jurassic), Colorado. 1999.

Cita MLA (8a ed.)

Dunagan, Stan P. A North American Freshwater Sponge (Eospongilla Morrisonensis New Genus and Species) from the Morrison Formation (Upper Jurassic), Colorado. 1999.