APA

Schirn M., .Axion V and Hume's principle in Frege's foundational project. : .

Chicago

Schirn M, .Axion V and Hume's principle in Frege's foundational project. : .

Harvard

Schirn M., .Axion V and Hume's principle in Frege's foundational project. : .

MLA

Schirn M, .: . .