Werck, A. (1922). Stained glass: A handbook on the art of stained and painted glass, its origin and development from the time of Charlemagne to its decadence; (850 - 1650 a.D.). New York: Brown.

Werck, Alfred. Stained Glass: A Handbook On the Art of Stained and Painted Glass, Its Origin and Development From the Time of Charlemagne to Its Decadence; (850 - 1650 A.D.). New York: Brown, 1922.

Werck, Alfred. Stained Glass: A Handbook On the Art of Stained and Painted Glass, Its Origin and Development From the Time of Charlemagne to Its Decadence; (850 - 1650 A.D.). New York: Brown, 1922.