(ABVV), A. B. V. (1968). 144/01617: Cursussen, verslag betreffende nationale studiedagen 1964, studieweek 1959, studieweek 1968, 1959, 1964.
Dyfyniad Arddull Chicago(ABVV), Algemeen Belgisch Vakverbond. 144/01617: Cursussen, Verslag Betreffende Nationale Studiedagen 1964, Studieweek 1959, Studieweek 1968, 1959, 1964. 1968.
Dyfyniad MLA(ABVV), Algemeen Belgisch Vakverbond. 144/01617: Cursussen, Verslag Betreffende Nationale Studiedagen 1964, Studieweek 1959, Studieweek 1968, 1959, 1964. 1968.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.