Dyfyniad APA

Tarr. Making Industrial Pittsburgh Modern. University of Pittsburgh Press.

Dyfyniad Arddull Chicago

Tarr. Making Industrial Pittsburgh Modern. University of Pittsburgh Press.

Dyfyniad MLA

Tarr. Making Industrial Pittsburgh Modern. University of Pittsburgh Press.

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