Academic References

-Roy, Robert. (2006).Earth-sheltered houses : How to build an affordable underground home.
Gabriola Island, B.C. : New Society Publishers.

-Boyer, Lester L. Grondzik, Walter T. (1981) 1st ed. Earth sheltered community design : energy-efficient residential development.
 New York : Van Nostrand Reinhold,

-Boas, Franz, (1858-1942) Traditions of the Thompson River Indians of British Columbia

-Dawson, George M. (1849-1901). Notes on the Shuswap people of British Columbia. Royal Society of Canada.

-Nabokov, Peter. Easton, Robert. (1989). Native American Architecture. Oxford University Press.

-Morgan, William N. (2008). Earth Architecture : from ancient to modern. Gainesville : University Press of Florida.

-Cantor, Steven L. (2008) . Green Roof in Sustainable in Landscape Design. New York : W. W. Norton & Co.

-L. Goldberg, C. Lane,  (1981). The Potential of Earth Sheltered and Underground Space. Pergamon Press, Oxford.

-Al-Sanea (2002). Thermal performance of building roof elements. Building and Environment.

-Luckett, Kelly (2009). Green Roof Construction and Maintenance. The McGraw-Hill Companies, Inc.