Cita APA (7a ed.)

Schwengel, J. (1940). Two new Floridan [sic] marine shells. Zenodo.

Cita Chicago Style (17a ed.)

Schwengel, J. Two New Floridan [sic] Marine Shells. Zenodo, 1940.

Cita MLA (9a ed.)

Schwengel, J. Two New Floridan [sic] Marine Shells. Zenodo, 1940.