APA (7th ed.) Zitazioa

Bartholdt, R. Esperanto: Hearings before the Committee on Education.

Chicago Style (17th ed.) Zitazioa

Bartholdt, Richard. Esperanto: Hearings Before the Committee on Education.

MLA (9th ed.) Zitazioa

Bartholdt, Richard. Esperanto: Hearings Before the Committee on Education.

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