APA

Ramage M. P., Webster M. N., Sanchez E., Mobil Technology Company, World Petroleum Congress (15th. : 1997 : Beijing), Webster M. N., Sanchez E. & Mobil Technology Company.Lubricants for the 21st century. : .

Chicago

Ramage Michael P, Webster Martin N, Sanchez Eugenio, Mobil Technology Company, World Petroleum Congress (15th. : 1997 : Beijing), Webster Martin N, Sanchez Eugenio and Mobil Technology Company.Lubricants for the 21st century. : .

Harvard

Ramage M. P., Webster M. N., Sanchez E., Mobil Technology Company, World Petroleum Congress (15th. : 1997 : Beijing), Webster M. N., Sanchez E. and Mobil Technology Company.Lubricants for the 21st century. : .

MLA

Ramage Michael P, Webster Martin N, Sanchez Eugenio, Mobil Technology Company, World Petroleum Congress (15th. : 1997 : Beijing), Webster Martin N, Sanchez Eugenio and Mobil Technology Company.: . .