Tohutoro APA (7th ed.)
Spencer, H. Pioniere der Modernen Typographie. Axel Juncker.
Tohutoru Kātū Chicago (17th ed.)
Spencer, Herbert. Pioniere Der Modernen Typographie. Munich, Alemania: Axel Juncker.
Tohutoro MLA (9th ed.)
Spencer, Herbert. Pioniere Der Modernen Typographie. Axel Juncker.
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