Dyfyniad APA

Porter, R. S. (1974). The making of the science of geology in Britain 1660-1815. University of Cambridge.

Dyfyniad Arddull Chicago

Porter, Roy Sydney. The Making of the Science of Geology in Britain 1660-1815. University of Cambridge, 1974.

Dyfyniad MLA

Porter, Roy Sydney. The Making of the Science of Geology in Britain 1660-1815. University of Cambridge, 1974.

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