Cita APA (7th ed.)

Purnell, H. (1962). Gas chromatography. John Wiley.

Cita Chicago (17th ed.)

Purnell, Howard. Gas Chromatography. New York: John Wiley, 1962.

Cita MLA (9th ed.)

Purnell, Howard. Gas Chromatography. John Wiley, 1962.