APA (7th ed.) Zitazioa

Crain's Chicago Business. Crain Communications Inc. (MI).

Chicago Style (17th ed.) Zitazioa

Crain's Chicago Business. Crain Communications Inc. (MI).

MLA (9th ed.) Zitazioa

Crain's Chicago Business. Crain Communications Inc. (MI).

Kontuz: berrikusi erreferentzia hauek erabili aurretik.