APA-ийн эшлэл(7 дахь хэвлэлт)

(1934). A primer ; comment on the great constructive work of the President of the United States in making arithmetic the basic science of government / by Samuel Crowther.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

A Primer ; Comment on the Great Constructive Work of the President of the United States in Making Arithmetic the Basic Science of Government / by Samuel Crowther. 1934.

MLA -ийн эшлэл (9 дэх хэвлэлт)

A Primer ; Comment on the Great Constructive Work of the President of the United States in Making Arithmetic the Basic Science of Government / by Samuel Crowther. 1934.