Swain, H. e. (2002). Big questions in science. Jonathan Cape.
Cita Chicago (17th ed.)Swain, Harriet ed. Big Questions in Science. London: Jonathan Cape, 2002.
Cita MLA (9th ed.)Swain, Harriet ed. Big Questions in Science. Jonathan Cape, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.