APA (7 वां संस्करण) प्रशस्ति पत्र

Pickens, W. Hubert H. Harrison: Philosopher of Harlem / William Pickens. American essays - Afro-american authors.(1992).

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Pickens, William. "Hubert H. Harrison: Philosopher of Harlem / William Pickens." American Essays - Afro-american Authors.(1992) .

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Pickens, William. "Hubert H. Harrison: Philosopher of Harlem / William Pickens." American Essays - Afro-american Authors.(1992), .