Cita APA (7th ed.)

Ryan, T. (1985). Facts from figures with your micro. Sigma.

Cita Chicago (17th ed.)

Ryan, Terence. Facts from Figures with Your Micro. Wilmslow: Sigma, 1985.

Cita MLA (8th ed.)

Ryan, Terence. Facts from Figures with Your Micro. Sigma, 1985.