APA (7th ed.) Zitazioa

(1938). Embryonic development and induction / by Hans Spemann.

Chicago Style (17th ed.) Zitazioa

Embryonic Development and Induction / by Hans Spemann. 1938.

MLA (9th ed.) Zitazioa

Embryonic Development and Induction / by Hans Spemann. 1938.