APA (7th ed.) Citation

Handler, E., & Roder, U. (1979). Flexible bandpass filtering using a coherent optical feedback technique. Applied Optics, 18, 2787.

Chicago Style (17th ed.) Citation

Handler, E., and U. Roder. "Flexible Bandpass Filtering Using a Coherent Optical Feedback Technique." Applied Optics 18 (1979): 2787.

MLA (9th ed.) Citation

Handler, E., and U. Roder. "Flexible Bandpass Filtering Using a Coherent Optical Feedback Technique." Applied Optics, vol. 18, 1979, p. 2787.