APA

National Research Council Canada. Technical memorandum nr 119, . (1977). Permafrost geophysics symposium. Oct 1976, Vancouver. Proceedings. Ottawa: National Research Council Canada. Technical memorandum nr 119.

Chicago

National Research Council Canada. Technical memorandum nr 119, . 1977. Permafrost geophysics symposium. Oct 1976, Vancouver. Proceedings. Ottawa: National Research Council Canada. Technical memorandum nr 119.

Harvard

National Research Council Canada. Technical memorandum nr 119, . (1977). Permafrost geophysics symposium. Oct 1976, Vancouver. Proceedings. Ottawa: National Research Council Canada. Technical memorandum nr 119.

MLA

National Research Council Canada. Technical memorandum nr 119, . Permafrost geophysics symposium. Oct 1976, Vancouver. Proceedings. Ottawa: National Research Council Canada. Technical memorandum nr 119. 1977.