APA (7th ed.) Citation

Willis, H. Recent Developments and Applications of Infrared Analytical Instruments. SPIE Digital Library.

Chicago Style (17th ed.) Citation

Willis, Harry. Recent Developments and Applications of Infrared Analytical Instruments. SPIE Digital Library.

MLA (9th ed.) Citation

Willis, Harry. Recent Developments and Applications of Infrared Analytical Instruments. SPIE Digital Library.

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