Dyfyniad APA

(1995). The Photonics corporate guide: To profiles and addresses (41st ed.). Photonics spectra.

Dyfyniad Arddull Chicago

The Photonics Corporate Guide: To Profiles and Addresses. 41st ed. : Photonics spectra, 1995.

Dyfyniad MLA

The Photonics Corporate Guide: To Profiles and Addresses. 41st ed. Photonics spectra, 1995.

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