The sanitation, water supply and sewage disposal of country houses
MLA
Gerhard, Wm. Paul. The sanitation, water supply and sewage disposal of country houses. New York : D. Van Nostrand, 1909.
APA
Gerhard, W. (1909). The sanitation, water supply and sewage disposal of country houses. New York : D. Van Nostrand.
Chicago
Gerhard, Wm. Paul. The sanitation, water supply and sewage disposal of country houses. New York : D. Van Nostrand, 1909.