Cita APA (7a ed.)

Emmens. S. H. Logic: Pure and applied. Strahan.

Cita Chicago Style (17a ed.)

Emmens. S. H. Logic: Pure and Applied. London: Strahan.

Cita MLA (9a ed.)

Emmens. S. H. Logic: Pure and Applied. Strahan.

警告：這些引文格式不一定是100％准確.