Cita APA (7th ed.)

Hume, F. (1906). The mystery of the shadow. Cassel.

Cita Chicago (17th ed.)

Hume, Fergus. The Mystery of the Shadow. London: Cassel, 1906.

Cita MLA (9th ed.)

Hume, Fergus. The Mystery of the Shadow. Cassel, 1906.