(1967). Polygonal ground and solifluction features: Photographic interpretation and field studies in northernmost Scandinavia. Gleerup.
Chicago-Zitierstil (17. Ausg.)Polygonal Ground and Solifluction Features: Photographic Interpretation and Field Studies in Northernmost Scandinavia. Lund: Gleerup, 1967.
MLA-Zitierstil (9. Ausg.)Polygonal Ground and Solifluction Features: Photographic Interpretation and Field Studies in Northernmost Scandinavia. Gleerup, 1967.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.