Cita APA (7a ed.)
Popper, K. R. Unended Quest: An Intellectual Autobiography. Fontana Books : Collins.
Cita estilo Chicago (17a ed.)
Popper, Karl R. Unended Quest: An Intellectual Autobiography. Londres, Inglaterra: Fontana Books : Collins.
Cita MLA (9a ed.)
Popper, Karl R. Unended Quest: An Intellectual Autobiography. Fontana Books : Collins.
警告：這些引文格式不一定是100％准確.