APA-viite (7. p.)
Piaggio, H. T. H. (1928). An elementary treatise on differential equations and their applications (New ed., rev. and enl.). G. Bell.
Chicago-viite (17. p.)
Piaggio, H. T. H. An Elementary Treatise on Differential Equations and Their Applications. New ed., rev. and enl. London: G. Bell, 1928.
MLA-viite (9. p.)
Piaggio, H. T. H. An Elementary Treatise on Differential Equations and Their Applications. New ed., rev. and enl. G. Bell, 1928.
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