Cita APA (7th ed.)
Piaggio, H. T. H. (1928). An elementary treatise on differential equations and their applications (New ed., rev. and enl.). G. Bell.
Cita Chicago (17th ed.)
Piaggio, H. T. H. An Elementary Treatise on Differential Equations and Their Applications. New ed., rev. and enl. London: G. Bell, 1928.
Cita MLA (9th ed.)
Piaggio, H. T. H. An Elementary Treatise on Differential Equations and Their Applications. New ed., rev. and enl. G. Bell, 1928.
Atenció: Aquestes cites poden no estar 100% correctes.