Dyfyniad APA

Porphyry, a. 2. 3., Smith, A., & Wasserstein, D. (1993). Porphyrii philosophi fragmenta. Teubner.

Dyfyniad Arddull Chicago

Porphyry, approximately 234-approximately 305, Andrew Smith, and Devid Wasserstein. Porphyrii Philosophi Fragmenta. Stutgardiae: Teubner, 1993.

Dyfyniad MLA

Porphyry, approximately 234-approximately 305, et al. Porphyrii Philosophi Fragmenta. Teubner, 1993.

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