APA

Gairing M. F., Frend M., Reglitzky A. A., Purmer P. D., Shell, World Petroleum Congress (14th : 1994 : Stavanger), Frend M., Reglitzky A. A., Purmer P. D. & Shell.Environmental needs and new automotive technologies drive lubricants quality. : .

Chicago

Gairing Max F, Frend Mike, Reglitzky Arno A, Purmer Piet D, Shell, World Petroleum Congress (14th : 1994 : Stavanger), Frend Mike, Reglitzky Arno A, Purmer Piet D and Shell.Environmental needs and new automotive technologies drive lubricants quality. : .

Harvard

Gairing M. F., Frend M., Reglitzky A. A., Purmer P. D., Shell, World Petroleum Congress (14th : 1994 : Stavanger), Frend M., Reglitzky A. A., Purmer P. D. and Shell.Environmental needs and new automotive technologies drive lubricants quality. : .

MLA

Gairing Max F, Frend Mike, Reglitzky Arno A, Purmer Piet D, Shell, World Petroleum Congress (14th : 1994 : Stavanger), Frend Mike, Reglitzky Arno A, Purmer Piet D and Shell.: . .