Citazione Stile APA (7a Edizione)
(1997). 20th World Gas Conference 1997. Volume 12: Task Force TF 2. Report and Papers. Gas and Developing Countries. Le gaz et les pays en voie de développment. International Gas Union.
Citazione stile Chigago Style (17a edizione)
20th World Gas Conference 1997. Volume 12: Task Force TF 2. Report and Papers. Gas and Developing Countries. Le Gaz Et Les Pays En Voie De Développment. B.m.: International Gas Union, 1997.
Citatione MLA (9a ed.)
20th World Gas Conference 1997. Volume 12: Task Force TF 2. Report and Papers. Gas and Developing Countries. Le Gaz Et Les Pays En Voie De Développment. International Gas Union, 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.