APA ציטוט

(1966). Encyclopedia international. Volume 19th: Valhalla-Zworykin. New York: Grolier.

Παραπομπή Chicago Style

Encyclopedia International. Volume 19th: Valhalla-Zworykin. New York: Grolier, 1966.

ציטוט MLA

Encyclopedia International. Volume 19th: Valhalla-Zworykin. New York: Grolier, 1966.