APA

American Gas Association A., American National Standard Institute A., . (1992). Rotary type gas displacement meters. Arlington: American Gas Association, AGA.

Chicago

American Gas Association AGA, American National Standard Institute ANSI, . 1992. Rotary type gas displacement meters. Arlington: American Gas Association, AGA.

Harvard

American Gas Association A., American National Standard Institute A., . (1992). Rotary type gas displacement meters. Arlington: American Gas Association, AGA.

MLA

American Gas Association AGA, American National Standard Institute ANSI, . Rotary type gas displacement meters. Arlington: American Gas Association, AGA. 1992.