Dyfyniad APA

Duffy, J. F., Kronauer, R. E., & Czeisler, C. A. (1996). Phase-shifting human circadian rhythms: Influence of sleep timing, social contact and light exposure.

Dyfyniad Arddull Chicago

Duffy, J F., R E. Kronauer, and C A. Czeisler. Phase-shifting Human Circadian Rhythms: Influence of Sleep Timing, Social Contact and Light Exposure. 1996.

Dyfyniad MLA

Duffy, J F., R E. Kronauer, and C A. Czeisler. Phase-shifting Human Circadian Rhythms: Influence of Sleep Timing, Social Contact and Light Exposure. 1996.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.