APA

Andress D. L., Sandison G. T., Ryan D., Phillips Petroleum Company, World Petroleum Congress (15th. : 1997 : Beijing), Sandison G. T., Ryan D. & Phillips Petroleum Company.Recent developments in LNG technology. : .

Chicago

Andress Don L, Sandison Gordon T, Ryan Dennis, Phillips Petroleum Company, World Petroleum Congress (15th. : 1997 : Beijing), Sandison Gordon T, Ryan Dennis and Phillips Petroleum Company.Recent developments in LNG technology. : .

Harvard

Andress D. L., Sandison G. T., Ryan D., Phillips Petroleum Company, World Petroleum Congress (15th. : 1997 : Beijing), Sandison G. T., Ryan D. and Phillips Petroleum Company.Recent developments in LNG technology. : .

MLA

Andress Don L, Sandison Gordon T, Ryan Dennis, Phillips Petroleum Company, World Petroleum Congress (15th. : 1997 : Beijing), Sandison Gordon T, Ryan Dennis and Phillips Petroleum Company.: . .