(1999). Learning Python Mark Lutz and David Ascher. [electronic resource].
Cita Chicago (17th ed.)Learning Python Mark Lutz and David Ascher. [electronic Resource]. 1999.
Cita MLA (9th ed.)Learning Python Mark Lutz and David Ascher. [electronic Resource]. 1999.
Atenció: Aquestes cites poden no estar 100% correctes.