Cita APA (7th ed.)
Duncan, P. (1999). Alfred Hitchcock. pocketessentials.
Cita Chicago (17th ed.)
Duncan, Paul. Alfred Hitchcock. [Harpenden, England]: pocketessentials, 1999.
Cita MLA (9th ed.)
Duncan, Paul. Alfred Hitchcock. pocketessentials, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.