APA-viite (7. p.)

Corvi, R. (1997). An introduction to the thought of karl popper. Routledge.

Chicago-viite (17. p.)

Corvi, Roberta. An Introduction to the Thought of Karl Popper. London: Routledge, 1997.

MLA-viite (9. p.)

Corvi, Roberta. An Introduction to the Thought of Karl Popper. Routledge, 1997.