Piaggio, H. T. H. (1920). An Elementary Treatise on Differential Equations and Their Applications. Modern Book Centre.
Citazione stile Chigago Style (17a edizione)Piaggio, H. T. H. An Elementary Treatise on Differential Equations and Their Applications. London: Modern Book Centre, 1920.
Citatione MLA (9a ed.)Piaggio, H. T. H. An Elementary Treatise on Differential Equations and Their Applications. Modern Book Centre, 1920.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.