(1999). SPE Mid-Continent Operations Symposium: Proceedings 28-31 March 1999 Oklahoma City, Oklahoma. Richardson, TX.: Society of Petroleum Engineers.
Παραπομπή Chicago StyleSPE Mid-Continent Operations Symposium: Proceedings 28-31 March 1999 Oklahoma City, Oklahoma. Richardson, TX.: Society of Petroleum Engineers, 1999.
Παραπομπή MLASPE Mid-Continent Operations Symposium: Proceedings 28-31 March 1999 Oklahoma City, Oklahoma. Richardson, TX.: Society of Petroleum Engineers, 1999.
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