Dyfyniad APA

Electronic Journal of Natural Sciences. Gitutyun ('Science') Publishing House.

Dyfyniad Arddull Chicago

Electronic Journal of Natural Sciences. Gitutyun ('Science') Publishing House.

Dyfyniad MLA

Electronic Journal of Natural Sciences. Gitutyun ('Science') Publishing House.

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