Ons congres van 8 december 1968.

MLA

Ons Congres Van 8 December 1968. [Brussel]: Vermeylenfonds, 1969.

APA

(1969). Ons congres van 8 december 1968. [Brussel]: Vermeylenfonds.

Chicago

Ons Congres Van 8 December 1968. [Brussel]: Vermeylenfonds, 1969.