Cita APA (7a ed.)
(1997). 20th World Gas Conference 1997: Working Comittee D. Report and Papers. Distribution des gaz. Vol.4. International Gas Union.
Cita Chicago Style (17a ed.)
20th World Gas Conference 1997: Working Comittee D. Report and Papers. Distribution Des Gaz. Vol.4. B.m.: International Gas Union, 1997.
Cita MLA (9a ed.)
20th World Gas Conference 1997: Working Comittee D. Report and Papers. Distribution Des Gaz. Vol.4. International Gas Union, 1997.
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