Cita APA (7th ed.)

Ashby, J. (1977). An introduction to gas chromatography. Pye Unicam.

Cita Chicago (17th ed.)

Ashby, J.D. An Introduction to Gas Chromatography. Cambridge: Pye Unicam, 1977.

Cita MLA (9th ed.)

Ashby, J.D. An Introduction to Gas Chromatography. Pye Unicam, 1977.