Cita APA (7th ed.)
Popper, K. R. Unended Quest: An Intellectual Autobiography. Fontana Books : Collins.
Cita Chicago (17th ed.)
Popper, Karl R. Unended Quest: An Intellectual Autobiography. Londres, Inglaterra: Fontana Books : Collins.
Cita MLA (9th ed.)
Popper, Karl R. Unended Quest: An Intellectual Autobiography. Fontana Books : Collins.
Atenció: Aquestes cites poden no estar 100% correctes.