Lua APA (7ú heag.)

Wattendorff, J. (1883). Papst Stephan IX: Julius Wattendorff. Schöningh.

Lua i Stíl Chicago (17ú heag.)

Wattendorff, Julius. Papst Stephan IX: Julius Wattendorff. Paderborn: Schöningh, 1883.

Lua MLA (8ú heag.)

Wattendorff, Julius. Papst Stephan IX: Julius Wattendorff. Schöningh, 1883.

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