An elementary treatise on differential equations and their applications /
by H. T. H. Piaggio.

APA Citation

Piaggio, H. T. H. (Henry Thomas Herbert). (1939). An elementary treatise on differential equations and their applications. London: G. Bell and Sons, Ltd..

MLA Citation

Piaggio, H. T. H. (Henry Thomas Herbert), 1884-. An Elementary Treatise On Differential Equations And Their Applications. London: G. Bell and Sons, Ltd., 1939.

Warning: These citations may not always be complete (especially for serials).