Donaldson, G. F. (1968). Farm machinery safety: Physical welfare effects of the man-machine interaction on farms. Royal Commission on Farm Machinery.
Lua i Stíl Chicago (17ú heag.)Donaldson, Graham Francis. Farm Machinery Safety: Physical Welfare Effects of the Man-machine Interaction on Farms. [Ottawa]: Royal Commission on Farm Machinery, 1968.
Lua MLA (8ú heag.)Donaldson, Graham Francis. Farm Machinery Safety: Physical Welfare Effects of the Man-machine Interaction on Farms. Royal Commission on Farm Machinery, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.