APA

Khalimov E., Klimushin I., Goldberg I., M, World Petroleum Congress (11th. : 1983 : London), Klimushin I., Goldberg I. & M.Geological problems of natural bitumen. : .

Chicago

Khalimov E.M, Klimushin I.M, Goldberg I.S, M, World Petroleum Congress (11th. : 1983 : London), Klimushin I.M, Goldberg I.S and M.Geological problems of natural bitumen. : .

Harvard

Khalimov E., Klimushin I., Goldberg I., M, World Petroleum Congress (11th. : 1983 : London), Klimushin I., Goldberg I. and M.Geological problems of natural bitumen. : .

MLA

Khalimov E.M, Klimushin I.M, Goldberg I.S, M, World Petroleum Congress (11th. : 1983 : London), Klimushin I.M, Goldberg I.S and M.: . .