SPE International Symposium on Oilfield Chemistry & States), S. o. P. E. (. (1991). 1991 SPE International Symposium on Oilfield Chemistry: Proceedings. Richardson, TX : Society of Petroleum Engineers.
Citazione stile Chigago Style (17a edizione)SPE International Symposium on Oilfield Chemistry e Society of Petroleum Engineers (United States). 1991 SPE International Symposium on Oilfield Chemistry: Proceedings. Richardson, TX : Society of Petroleum Engineers, 1991.
Citatione MLA (9a ed.)SPE International Symposium on Oilfield Chemistry e Society of Petroleum Engineers (United States). 1991 SPE International Symposium on Oilfield Chemistry: Proceedings. Richardson, TX : Society of Petroleum Engineers, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.