APA (7th ed.) Citation

Lewandowski, R. Helmet- and Head-Mounted Displays IV. SPIE Digital Library.

Chicago Style (17th ed.) Citation

Lewandowski, Ronald. Helmet- and Head-Mounted Displays IV. SPIE Digital Library.

MLA (9th ed.) Citation

Lewandowski, Ronald. Helmet- and Head-Mounted Displays IV. SPIE Digital Library.

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