Potential of earthshelterd and underground space; today's resource for tomorrow's space and energy viability; proceedings of the underground space conference and exposition.

MLA

Holthusen, T. L. Potential of Earthshelterd and Underground Space; Today's Resource for Tomorrow's Space and Energy Viability; Proceedings of the Underground Space Conference and Exposition. Paris: Pergamon press, 1981.

APA

Holthusen, T. L. (1981). Potential of earthshelterd and underground space; today's resource for tomorrow's space and energy viability; proceedings of the underground space conference and exposition. Paris: Pergamon press.

Chicago

Holthusen, T. L. Potential of Earthshelterd and Underground Space; Today's Resource for Tomorrow's Space and Energy Viability; Proceedings of the Underground Space Conference and Exposition. Paris: Pergamon press, 1981.