APA

Sporn P., Ambrose E., . (1947). Heat pumps. New York: J. Wiley and Sans.

Chicago

Sporn Philip, Ambrose E.R, . 1947. Heat pumps. New York: J. Wiley and Sans.

Harvard

Sporn P., Ambrose E., . (1947). Heat pumps. New York: J. Wiley and Sans.

MLA

Sporn Philip, Ambrose E.R, . Heat pumps. New York: J. Wiley and Sans. 1947.