273861 Campbell, R. D. (1985). Ground training for the private pilot licence. Oxford : BSP Professional Books.
Citazione stile Chigago Style (17a edizione)273861 Campbell, R. D. Ground Training for the Private Pilot Licence. Oxford : BSP Professional Books, 1985.
Citatione MLA (9a ed.)273861 Campbell, R. D. Ground Training for the Private Pilot Licence. Oxford : BSP Professional Books, 1985.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.