Smyth, J. C. (1968). Shells and shellfish. Oliver and Boyd.
Cita Chicago (17th ed.)Smyth, J. C. Shells and Shellfish. Londres: Oliver and Boyd, 1968.
Cita MLA (9th ed.)Smyth, J. C. Shells and Shellfish. Oliver and Boyd, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.