Pol Mara : Abstract

MLA

Beckers, Walter. Pol Mara : Abstract. 319/475 ex. Kappellenbos: [s.n.], 1968.

APA

Beckers, W. (1968). Pol Mara : Abstract. 319/475 ex. Kappellenbos: [s.n.].

Chicago

Beckers, Walter Pol Mara: Abstract. 319/475 ex. Kappellenbos: [s.n.], 1968.