APA

American Water Works Association, . (1982). Basic management principles for small water systems. USA: American Water Works Association.

Chicago

American Water Works Association, . 1982. Basic management principles for small water systems. USA: American Water Works Association.

Harvard

American Water Works Association, . (1982). Basic management principles for small water systems. USA: American Water Works Association.

MLA

American Water Works Association, . Basic management principles for small water systems. USA: American Water Works Association. 1982.