Dyfyniad APA
Johnstone, B. (2015). Pittsburgh speech and Pittsburghese. De Gruyter Mouton.
Dyfyniad Arddull Chicago
Johnstone, Barbara. Pittsburgh Speech and Pittsburghese. Berlin, [Germany] ; Boston, [Massachusetts]: De Gruyter Mouton, 2015.
Dyfyniad MLA
Johnstone, Barbara. Pittsburgh Speech and Pittsburghese. De Gruyter Mouton, 2015.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.