APA (7th ed.) Zitazioa

Seward, A. C. Links With the Past in the Plant World.

Chicago Style (17th ed.) Zitazioa

Seward, A. C. Links With the Past in the Plant World.

MLA (9th ed.) Zitazioa

Seward, A. C. Links With the Past in the Plant World.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.