Hubert, L. F., & Timchalk, A. (1972). Convective clouds as tracers of air motion. NOAA.
Cita Chicago (17th ed.)Hubert, Lester F., i Andrew Timchalk. Convective Clouds as Tracers of Air Motion. Washington, D.C.: NOAA, 1972.
Cita MLA (8th ed.)Hubert, Lester F., i Andrew Timchalk. Convective Clouds as Tracers of Air Motion. NOAA, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.