Gilbert, J. (1975). The world's worst aircraft. M & J Hobbs in association with Michael Joseph.
Citazione stile Chigago Style (17a edizione)Gilbert, James. The World's Worst Aircraft. Walton-on-Thames [Eng.]: M & J Hobbs in association with Michael Joseph, 1975.
Citatione MLA (8a ed.)Gilbert, James. The World's Worst Aircraft. M & J Hobbs in association with Michael Joseph, 1975.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.