Brieven bewaren; brieven publiceren.

MLA

Schmook, Ger. Brieven Bewaren; Brieven Publiceren. Brussel: s.n., 1961.

APA

Schmook, G. (1961). Brieven bewaren; brieven publiceren. Brussel: s.n.

Chicago

Schmook, Ger, Brieven Bewaren; Brieven Publiceren. Brussel: s.n., 1961.