The magnetic compass in aircraft ...
Air ministry (Directorate of research) November, 1920.

APA Citation

Great Britain. Air Ministry. (1922). The magnetic compass in aircraft ..: Air ministry (Directorate of research) November, 1920. London: H.M. Stationery off..

MLA Citation

Great Britain. Air Ministry. The Magnetic Compass In Aircraft ..: Air Ministry (Directorate of Research) November, 1920. London: H.M. Stationery off., 1922.

Warning: These citations may not always be complete (especially for serials).