APA (7th ed.) Citation

Hill, W. C. O. (1939). Observations on a giant Sumatran orang. Press of the Wistar Instutute of Anatomy and Biology.

Chicago Style (17th ed.) Citation

Hill, W. C. Osman. Observations on a Giant Sumatran Orang. Philadelphia, Pa.: Press of the Wistar Instutute of Anatomy and Biology, 1939.

MLA (9th ed.) Citation

Hill, W. C. Osman. Observations on a Giant Sumatran Orang. Press of the Wistar Instutute of Anatomy and Biology, 1939.