Dyfyniad APA

Lockwood, A. H. (2012). The silent epidemic: Coal and the hidden threat to health. MIT Press.

Dyfyniad Arddull Chicago

Lockwood, Alan H. The Silent Epidemic: Coal and the Hidden Threat to Health. Cambridge, Mass.: MIT Press, 2012.

Dyfyniad MLA

Lockwood, Alan H. The Silent Epidemic: Coal and the Hidden Threat to Health. MIT Press, 2012.

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