Παραπομπή APA

Paul, J. K. (1977). Solar Heating and Cooling: Recent advances. NDC.

Παραπομπή Chicago Style

Paul, J. K. Solar Heating and Cooling: Recent Advances. New Jersey: NDC, 1977.

Παραπομπή MLA

Paul, J. K. Solar Heating and Cooling: Recent Advances. NDC, 1977.