Lua APA (7ú heag.)

Petersen, K. W. (1990). Evolution and taxonomy in capitate hydroids and medusae. Linnean Society of London].

Lua i Stíl Chicago (17ú heag.)

Petersen, K. W. Evolution and Taxonomy in Capitate Hydroids and Medusae. [London: Linnean Society of London], 1990.

Lua MLA (8ú heag.)

Petersen, K. W. Evolution and Taxonomy in Capitate Hydroids and Medusae. Linnean Society of London], 1990.

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