An inexpensive economical solar heating system for homes /

Chicago citation style
An inexpensive economical solar heating system for homes /. 1976. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/011427261. (Accessed December 14, 2018.)
APA citation style
(1976) An inexpensive economical solar heating system for homes /. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/011427261
MLA citation style
Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/011427261>.
Note: These citations are programmatically generated and may be incomplete.