APA (7. basım) Alıntı

BARRETT, O. B. The International News Agencies Oliver Boyd Barrett. s.n.

Chicago Style (17. basım) Atıf

BARRETT, Oliver Boyd. The International News Agencies Oliver Boyd Barrett. s.n.

MLA (8th ed.) Atıf

BARRETT, Oliver Boyd. The International News Agencies Oliver Boyd Barrett. s.n.