APA (7th ed.) Citation

Stiles, W. S. (1937). Visibility of light signals with special reference to aviation lights: Review of existing knowledge. HSMO.

Chicago Style (17th ed.) Citation

Stiles, Walter S. Visibility of Light Signals with Special Reference to Aviation Lights: Review of Existing Knowledge. London: HSMO, 1937.

MLA (9th ed.) Citation

Stiles, Walter S. Visibility of Light Signals with Special Reference to Aviation Lights: Review of Existing Knowledge. HSMO, 1937.