Astrid Beumer.

MLA

Beumer, Marjolein, et al. Astrid Beumer. 281/450 ex. Leiden,: [s.n.], 1995.

APA

Beumer, M., Bogtstra, A., Kelder, W., Lintjer, R., Overtoom, W., Poot, J., Roepers, N., & van Hooghenhuyze, M. (1995). Astrid Beumer. 281/450 ex. Leiden,: [s.n.].

Chicago

Beumer, Marjolein, Anneke Bogtstra, Walter Kelder, Ronald Lintjer, Willem Overtoom, Jurrie Poot, Nicole Roepers, and Michael van Hooghenhuyze. Astrid Beumer. 281/450 ex. Leiden,: [s.n.], 1995.