APA (7th ed.) Zitazioa

(2000). The two-headed boy, and other medical marvels / Jan Bondeson.

Chicago Style (17th ed.) Zitazioa

The Two-headed Boy, and Other Medical Marvels / Jan Bondeson. 2000.

MLA (9th ed.) Zitazioa

The Two-headed Boy, and Other Medical Marvels / Jan Bondeson. 2000.

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