APA

Conway J., Rogers D., World Petroleum Congress (16th. : 2000 jun. 11-15 : Calgary A. C. & Rogers D.Marginal oil fields. : .

Chicago

Conway John, Rogers Doug, World Petroleum Congress (16th. : 2000 jun. 11-15 : Calgary Alberta Canada) and Rogers Doug.Marginal oil fields. : .

Harvard

Conway J., Rogers D., World Petroleum Congress (16th. : 2000 jun. 11-15 : Calgary A. C. and Rogers D.Marginal oil fields. : .

MLA

Conway John, Rogers Doug, World Petroleum Congress (16th. : 2000 jun. 11-15 : Calgary Alberta Canada) and Rogers Doug.: . .