APA (7th ed.) Citation

Peng, E. T. (1991). High-power and wavelength-tunable traveling-wave semiconductor ring laser. [publisher not identified].

Chicago Style (17th ed.) Citation

Peng, En Titus. High-power and Wavelength-tunable Traveling-wave Semiconductor Ring Laser. [Place of publication not identified]: [publisher not identified], 1991.

MLA (9th ed.) Citation

Peng, En Titus. High-power and Wavelength-tunable Traveling-wave Semiconductor Ring Laser. [publisher not identified], 1991.