APA (7th ed.) Citation

Chapman, R. (1969). Unidentified flying objects. Barker.

Chicago Style (17th ed.) Citation

Chapman, Robert. Unidentified Flying Objects. London,: Barker, 1969.

MLA (8th ed.) Citation

Chapman, Robert. Unidentified Flying Objects. Barker, 1969.

Warning: These citations may not always be 100% accurate.