Pirsig Robert M. (2004). Zen and the Art of Motorcycle Maintenance (40th.). Vintage Books.
Cita Chicago (17th ed.)Pirsig Robert M. Zen and the Art of Motorcycle Maintenance. 40th. Vintage Books, 2004.
Cita MLA (9th ed.)Pirsig Robert M. Zen and the Art of Motorcycle Maintenance. 40th. Vintage Books, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.