Dyfyniad APA

Rosen,Joe, & Quinn Gothard. (2013). Encyclopedia of physical science. Viva book.

Dyfyniad Arddull Chicago

Rosen,Joe, and Quinn Gothard. Encyclopedia of Physical Science. New Delhi: Viva book, 2013.

Dyfyniad MLA

Rosen,Joe, and Quinn Gothard. Encyclopedia of Physical Science. Viva book, 2013.

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