APA (7 वां संस्करण) प्रशस्ति पत्र

Olisah, O. (1950). The statements of Hitler before the world war: Drama: his last words and disappearance. Published by Okenwa Publications.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Olisah, Okenwa. The Statements of Hitler Before the World War: Drama: His Last Words and Disappearance. Onitsha [Nigeria]: Published by Okenwa Publications, 1950.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Olisah, Okenwa. The Statements of Hitler Before the World War: Drama: His Last Words and Disappearance. Published by Okenwa Publications, 1950.

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