Παραπομπή APA

Dyroff, H., & Speidel, M. (1988). Art nouveau/Jugendstil architecture in Europe. [s.l.]: German Commission for UNESCO.

Παραπομπή Chicago Style

Dyroff, Hans-Dieter, and Manfred Speidel. Art Nouveau/Jugendstil Architecture in Europe. [s.l.]: German Commission for UNESCO, 1988.

Παραπομπή MLA

Dyroff, Hans-Dieter, and Manfred Speidel. Art Nouveau/Jugendstil Architecture in Europe. [s.l.]: German Commission for UNESCO, 1988.

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