Ground frost penetration in Sweden

MLA

Janson, L. E., and National Research Council of Canada. Division of Building Research. Ground Frost Penetration in Sweden. Jan. 1972. EBSCOhost, https://doi.org/10.4224/20359073.

APA

Janson, L. E., & National Research Council of Canada. Division of Building Research. (1972). Ground frost penetration in Sweden. https://doi.org/10.4224/20359073

Chicago

Janson, L. E., and National Research Council of Canada. Division of Building Research. 1972. “Ground Frost Penetration in Sweden,” January. doi:10.4224/20359073.