Dyfyniad APA

Bryan, T. S. (2018). The geysers of Yellowstone (Fifth edition.). University Press of Colorado.

Dyfyniad Arddull Chicago

Bryan, T. Scott. The Geysers of Yellowstone. Fifth edition. Boulder: University Press of Colorado, 2018.

Dyfyniad MLA

Bryan, T. Scott. The Geysers of Yellowstone. Fifth edition. University Press of Colorado, 2018.

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