Dyfyniad APA

Royal Irish Academy. Biology and Environment. Dublin: Royal Irish Academic.

Dyfyniad Arddull Chicago

Royal Irish Academy. Biology and Environment. Dublin: Royal Irish Academic.

Dyfyniad MLA

Royal Irish Academy. Biology and Environment. Dublin: Royal Irish Academic.

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