Oppe,A.S, & Oppe, A. (1993). Wharton's law lexicon (14th ed.). Universal Law publishers.
Dyfyniad Arddull ChicagoOppe,A.S, and A.S Oppe. Wharton's Law Lexicon. 14th ed. Delhi: Universal Law publishers, 1993.
Dyfyniad MLAOppe,A.S, and A.S Oppe. Wharton's Law Lexicon. 14th ed. Universal Law publishers, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.