Cita APA (7th ed.)

Ronningen, H. A. (1972). Metrics: measurement for tomorrow: By Helmer A. Ronningen. --. Collier.

Cita Chicago (17th ed.)

Ronningen, Helmer A. Metrics: Measurement for Tomorrow: By Helmer A. Ronningen. --. New York: Collier, 1972.

Cita MLA (9th ed.)

Ronningen, Helmer A. Metrics: Measurement for Tomorrow: By Helmer A. Ronningen. --. Collier, 1972.