Cita APA (7th ed.)

Beddard, F. E. Earthworms and Their Allies.

Cita Chicago (17th ed.)

Beddard, Frank E. Earthworms and Their Allies.

Cita MLA (9th ed.)

Beddard, Frank E. Earthworms and Their Allies.

Atenció: Aquestes cites poden no estar 100% correctes.