Ernst Billgren : asimutal.

MLA

Billgren, Ernst. Ernst Billgren : Asimutal. Stockholm: Raster ;, 1993.

APA

Billgren, E. (1993). Ernst Billgren : asimutal. Stockholm: Raster ;.

Chicago

Billgren, Ernst Ernst Billgren: Asimutal. Stockholm: Raster ;, 1993.