APA (7th ed.) Citation

Shoemaker, C. M. Unmanned Systems Technology XXI. SPIE Digital Library.

Chicago Style (17th ed.) Citation

Shoemaker, Charles M. Unmanned Systems Technology XXI. SPIE Digital Library.

MLA (9th ed.) Citation

Shoemaker, Charles M. Unmanned Systems Technology XXI. SPIE Digital Library.

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