Ante terminum

MLA

Helderenberg, Gery. Ante Terminum. Hasselt: Heideland-Orbis, 1971.

APA

Helderenberg, G. (1971). Ante terminum. Hasselt: Heideland-Orbis.

Chicago

Helderenberg, Gery, Ante Terminum. Hasselt: Heideland-Orbis, 1971.