(ABVV), A. B. V. 144/4.6: Studiediensten.
Lua i Stíl Chicago (17ú heag.)(ABVV), Algemeen Belgisch Vakverbond. 144/4.6: Studiediensten.
Lua MLA (8ú heag.)(ABVV), Algemeen Belgisch Vakverbond. 144/4.6: Studiediensten.
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