APA (7th ed.) Citation

Lippert, T. Helmet-Mounted Displays III. SPIE Digital Library.

Chicago Style (17th ed.) Citation

Lippert, Thomas. Helmet-Mounted Displays III. SPIE Digital Library.

MLA (8th ed.) Citation

Lippert, Thomas. Helmet-Mounted Displays III. SPIE Digital Library.

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