Lua APA (7ú heag.)

Dresen, P. (1959). De Vrije Meningsuiting. Jasonpers, Universiteitspers.

Lua i Stíl Chicago (17ú heag.)

Dresen, P. De Vrije Meningsuiting. Jasonpers, Universiteitspers, 1959.

Lua MLA (8ú heag.)

Dresen, P. De Vrije Meningsuiting. Jasonpers, Universiteitspers, 1959.

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