Gaya APA

Corvi, R., Camiller, P. (1997). An Introduction to the Thought of Karl Popper (First Edition). USA and Canada: Routledge.

Gaya MLA

Corvi, Roberta., Camiller, Patrick. "An Introduction to the Thought of Karl Popper". First Edition USA and Canada: Routledge, 1997. e-book.