APA
American Gas Association A., . (1980). Gas measurement manual (revised). Washington: American Gas Association, AGA.
Chicago
American Gas Association AGA, . 1980. Gas measurement manual (revised). Washington: American Gas Association, AGA.
Harvard
American Gas Association A., . (1980). Gas measurement manual (revised). Washington: American Gas Association, AGA.
MLA
American Gas Association AGA, . Gas measurement manual (revised). Washington: American Gas Association, AGA. 1980.
