Hartwick, T. CO2 Laser Devices and Applications. SPIE Digital Library.
Cita Chicago (17th ed.)Hartwick, Thomas. CO2 Laser Devices and Applications. SPIE Digital Library.
Cita MLA (8th ed.)Hartwick, Thomas. CO2 Laser Devices and Applications. SPIE Digital Library.
Atenció: Aquestes cites poden no estar 100% correctes.