(ABVV), A. B. V. (1968). 144/01617: Cursussen, verslag betreffende nationale studiedagen 1964, studieweek 1959, studieweek 1968, 1959, 1964.
Lua i Stíl Chicago (17ú heag.)(ABVV), Algemeen Belgisch Vakverbond. 144/01617: Cursussen, Verslag Betreffende Nationale Studiedagen 1964, Studieweek 1959, Studieweek 1968, 1959, 1964. 1968.
Lua MLA (8ú heag.)(ABVV), Algemeen Belgisch Vakverbond. 144/01617: Cursussen, Verslag Betreffende Nationale Studiedagen 1964, Studieweek 1959, Studieweek 1968, 1959, 1964. 1968.
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