APA-ийн эшлэл(7 дахь хэвлэлт)

Piaggio, H. T. H. (1920). An Elementary Treatise on Differential Equations and Their Applications. Modern Book Centre.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Piaggio, H. T. H. An Elementary Treatise on Differential Equations and Their Applications. London: Modern Book Centre, 1920.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Piaggio, H. T. H. An Elementary Treatise on Differential Equations and Their Applications. Modern Book Centre, 1920.