Cita APA (7th ed.)

Pooper, K. R. (1966). The open society and its enemies (5a. ed.). Routledge & Kegan Paul.

Cita Chicago (17th ed.)

Pooper, Karl R. The Open Society and Its Enemies. 5a. ed. Londres: Routledge & Kegan Paul, 1966.

Cita MLA (9th ed.)

Pooper, Karl R. The Open Society and Its Enemies. 5a. ed. Routledge & Kegan Paul, 1966.