APA (7th ed.) Citation

Adams, H., Wright, W., Wright, W., & Wright, O. (1909). Flug. Amelang.

Chicago Style (17th ed.) Citation

Adams, Heinrich, Wilbur Wright, Wilbur Wright, and Orville Wright. Flug. Leipzig: Amelang, 1909.

MLA (9th ed.) Citation

Adams, Heinrich, et al. Flug. Amelang, 1909.