Cita APA (7a ed.)

Cornelius, P. F. (1995). North-west European thecate hydroids and their medusae: Keys and notes for identification of the species. Field Studies Council.

Cita Chicago Style (17a ed.)

Cornelius, Paul F.S. North-west European Thecate Hydroids and Their Medusae: Keys and Notes for Identification of the Species. Shrewsbury: Field Studies Council, 1995.

Cita MLA (9a ed.)

Cornelius, Paul F.S. North-west European Thecate Hydroids and Their Medusae: Keys and Notes for Identification of the Species. Field Studies Council, 1995.