Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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