Kamminga, M. S. (1953). The aircraft commander in commercial air transportation. M. Nijhoff.
Dyfyniad Arddull ChicagoKamminga, M. S. The Aircraft Commander in Commercial Air Transportation. The Hague: M. Nijhoff, 1953.
Dyfyniad MLAKamminga, M. S. The Aircraft Commander in Commercial Air Transportation. M. Nijhoff, 1953.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.