APA

National Research Council Canada, . (1978). Permafrost. International Conference 3. Edmonton, Alberta, Canada. 1978. Proceedings. Vol 1 + Abstracts. Ottawa: National Research Council Canada.

Chicago

National Research Council Canada, . 1978. Permafrost. International Conference 3. Edmonton, Alberta, Canada. 1978. Proceedings. Vol 1 + Abstracts. Ottawa: National Research Council Canada.

Harvard

National Research Council Canada, . (1978). Permafrost. International Conference 3. Edmonton, Alberta, Canada. 1978. Proceedings. Vol 1 + Abstracts. Ottawa: National Research Council Canada.

MLA

National Research Council Canada, . Permafrost. International Conference 3. Edmonton, Alberta, Canada. 1978. Proceedings. Vol 1 + Abstracts. Ottawa: National Research Council Canada. 1978.