Bill A., S., & Downing, C. M. (1976). Agricultural mechanisation policy. International Labour Organization.
Citazione stile Chigago Style (17a edizione)Bill A., Stout, e C. M. Downing. Agricultural Mechanisation Policy. International Labour Organization, 1976.
Citatione MLA (9a ed.)Bill A., Stout, e C. M. Downing. Agricultural Mechanisation Policy. International Labour Organization, 1976.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.