Dyfyniad APA

Portal: Libraries & the Academy. Johns Hopkins University Press.

Dyfyniad Arddull Chicago

Portal: Libraries & the Academy. Johns Hopkins University Press.

Dyfyniad MLA

Portal: Libraries & the Academy. Johns Hopkins University Press.

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