Ashall, F. (1994). Remarkable discoveries! Cambridge University Press.
Cita Chicago (17th ed.)Ashall, Frank. Remarkable Discoveries! Cambridge [England] ; New York, NY, USA: Cambridge University Press, 1994.
Cita MLA (8th ed.)Ashall, Frank. Remarkable Discoveries! Cambridge University Press, 1994.
Atenció: Aquestes cites poden no estar 100% correctes.