APA

American Gas Association A., American National Standard Institute A. & American National Standard Institute A. (2000). Diaphragm type gas displacement meters (500 Cubic feet per hour capacity and over). Washington: American Gas Association, AGA.

Chicago

American Gas Association AGA, American National Standard Institute ANSI and American National Standard Institute ANSI. 2000. Diaphragm type gas displacement meters (500 Cubic feet per hour capacity and over). Washington: American Gas Association, AGA.

Harvard

American Gas Association A., American National Standard Institute A. and American National Standard Institute A. (2000). Diaphragm type gas displacement meters (500 Cubic feet per hour capacity and over). Washington: American Gas Association, AGA.

MLA

American Gas Association AGA, American National Standard Institute ANSI and American National Standard Institute ANSI. Diaphragm type gas displacement meters (500 Cubic feet per hour capacity and over). Washington: American Gas Association, AGA. 2000.