Cita APA (7a ed.)

Wells, H. G. (1921). The outline of history: Being a Plain History of Life and Mankind. Cassell.

Cita Chicago Style (17a ed.)

Wells, H. G. The Outline of History: Being a Plain History of Life and Mankind. London: Cassell, 1921.

Cita MLA (9a ed.)

Wells, H. G. The Outline of History: Being a Plain History of Life and Mankind. Cassell, 1921.