Taylor, J. W. (1888). Amalia gagates in Cardiganshire. Zenodo.
Cita Chicago (17th ed.)Taylor, John W. Amalia Gagates in Cardiganshire. Zenodo, 1888.
Cita MLA (9th ed.)Taylor, John W. Amalia Gagates in Cardiganshire. Zenodo, 1888.
Atenció: Aquestes cites poden no estar 100% correctes.