Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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