APA (7th ed.) Citation

Langley, C., Langley, C., & Hancock, G. (2012). Development of Techniques for Trace Gas Detection in Breath.

Chicago Style (17th ed.) Citation

Langley, C., Cathryn Langley, and G. Hancock. Development of Techniques for Trace Gas Detection in Breath. 2012.

MLA (9th ed.) Citation

Langley, C., et al. Development of Techniques for Trace Gas Detection in Breath. 2012.