APA-referens (7:e uppl.)
Technical Council on Cold Regions Engineering, ebrary, Inc, & Clarke, E. S. (2007). Permafrost foundations: State of the practice. American Society of Civil Engineers.
Chicago-referens (17:e uppl.)
Technical Council on Cold Regions Engineering, Inc ebrary, och Edwin S. Clarke. Permafrost Foundations: State of the Practice. Reston, VA: American Society of Civil Engineers, 2007.
MLA-referens (9:e uppl.)
Technical Council on Cold Regions Engineering, et al. Permafrost Foundations: State of the Practice. American Society of Civil Engineers, 2007.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.