Cita APA (7a ed.)

Popper, K. R. (1990). A world of propensities. Thoemmes.

Cita Chicago Style (17a ed.)

Popper, Karl Raimund. A World of Propensities. Bristol: Thoemmes, 1990.

Cita MLA (9a ed.)

Popper, Karl Raimund. A World of Propensities. Thoemmes, 1990.