Dyfyniad APA

Rogers. Petroglyphs, Pictographs, and Projections. University of Utah Press.

Dyfyniad Arddull Chicago

Rogers. Petroglyphs, Pictographs, and Projections. University of Utah Press.

Dyfyniad MLA

Rogers. Petroglyphs, Pictographs, and Projections. University of Utah Press.

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