Rothschild, K. K. (1996). How things work. Time Life Asia.
Cita Chicago (17th ed.)Rothschild, Katherine K. How Things Work. Hong Kong: Time Life Asia, 1996.
Cita MLA (9th ed.)Rothschild, Katherine K. How Things Work. Time Life Asia, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.