Cita APA (7a ed.)

820975 author. (1846). A Secret Worth Knowing: A Treatise on the Most Important Subject in the World: Simply to Say, Insanity.

Cita Chicago Style (17a ed.)

820975 author. A Secret Worth Knowing: A Treatise on the Most Important Subject in the World: Simply to Say, Insanity. Nashville, TN, 1846.

Cita MLA (9a ed.)

820975 author. A Secret Worth Knowing: A Treatise on the Most Important Subject in the World: Simply to Say, Insanity. 1846.