APA

Duhot J., Totalfina, World Petroleum Congress (16th. : 2000 jun. 11-15 : Calgary A. C. & Totalfina.The Deep Offshore off the coast of West Africa. : .

Chicago

Duhot J.F, Totalfina, World Petroleum Congress (16th. : 2000 jun. 11-15 : Calgary Alberta Canada) and Totalfina.The Deep Offshore off the coast of West Africa. : .

Harvard

Duhot J., Totalfina, World Petroleum Congress (16th. : 2000 jun. 11-15 : Calgary A. C. and Totalfina.The Deep Offshore off the coast of West Africa. : .

MLA

Duhot J.F, Totalfina, World Petroleum Congress (16th. : 2000 jun. 11-15 : Calgary Alberta Canada) and Totalfina.: . .