APA

Sankey B., Bushnell J., Gudelis D., Imperial Oil Limited, Exxon Research and Engineering Company, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest), Bushnell J., Gudelis D., Imperial Oil Limited & Exxon Research and Engineering Company.Exol N: new lubricants extraction process. : .

Chicago

Sankey B.M, Bushnell J.D, Gudelis D.A, Imperial Oil Limited, Exxon Research and Engineering Company, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest), Bushnell J.D, Gudelis D.A, Imperial Oil Limited and Exxon Research and Engineering Company.Exol N: new lubricants extraction process. : .

Harvard

Sankey B., Bushnell J., Gudelis D., Imperial Oil Limited, Exxon Research and Engineering Company, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest), Bushnell J., Gudelis D., Imperial Oil Limited and Exxon Research and Engineering Company.Exol N: new lubricants extraction process. : .

MLA

Sankey B.M, Bushnell J.D, Gudelis D.A, Imperial Oil Limited, Exxon Research and Engineering Company, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest), Bushnell J.D, Gudelis D.A, Imperial Oil Limited and Exxon Research and Engineering Company.: . .