Cita APA (7a ed.)

Gray, J. E. (1858). III.—On the structure of Humphreyia, an anomalous bivalve shell, hitherto confounded with Aspergillum. Zenodo.

Cita Chicago Style (17a ed.)

Gray, John Edward. III.—On the Structure of Humphreyia, an Anomalous Bivalve Shell, Hitherto Confounded with Aspergillum. Zenodo, 1858.

Cita MLA (9a ed.)

Gray, John Edward. III.—On the Structure of Humphreyia, an Anomalous Bivalve Shell, Hitherto Confounded with Aspergillum. Zenodo, 1858.