Lua APA (7ú heag.)

Sybrands, W. CO_1501: Sybrands Wilfried.

Lua i Stíl Chicago (17ú heag.)

Sybrands, Wilfried. CO_1501: Sybrands Wilfried.

Lua MLA (8ú heag.)

Sybrands, Wilfried. CO_1501: Sybrands Wilfried.

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