Puchta, H., Stranks, J., Carter, R., & Lewis-Jones, P. (2005). English in mind: Audio CD 1. Cambridge University Press.
Dyfyniad Arddull ChicagoPuchta, Herbert, Jeff Stranks, Richard Carter, and Peter Lewis-Jones. English in Mind: Audio CD 1. Cambridge: Cambridge University Press, 2005.
Dyfyniad MLAPuchta, Herbert, et al. English in Mind: Audio CD 1. Cambridge University Press, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.