APA

Baker M. N., . (1949). The quest for pure water. New York: The American Water Works Association.

Chicago

Baker M N, . 1949. The quest for pure water. New York: The American Water Works Association.

Harvard

Baker M. N., . (1949). The quest for pure water. New York: The American Water Works Association.

MLA

Baker M N, . The quest for pure water. New York: The American Water Works Association. 1949.