APA

American Gas Association A., American Gas Association A., . (1992). Total quality management. Resource guide. [s.l.]: American Gas Association, AGA.

Chicago

American Gas Association AGA, American Gas Association AGA, . 1992. Total quality management. Resource guide. [s.l.]: American Gas Association, AGA.

Harvard

American Gas Association A., American Gas Association A., . (1992). Total quality management. Resource guide. [s.l.]: American Gas Association, AGA.

MLA

American Gas Association AGA, American Gas Association AGA, . Total quality management. Resource guide. [s.l.]: American Gas Association, AGA. 1992.