APA

Chernyaev V., Yasin E., Cherkasov N., World Petroleum Congress (15th. : 1997 : Beijing), Yasin E. & Cherkasov N.Transneft economic strategy on the eve of 21st century. : .

Chicago

Chernyaev V.D, Yasin E.M, Cherkasov N.M, World Petroleum Congress (15th. : 1997 : Beijing), Yasin E.M and Cherkasov N.M.Transneft economic strategy on the eve of 21st century. : .

Harvard

Chernyaev V., Yasin E., Cherkasov N., World Petroleum Congress (15th. : 1997 : Beijing), Yasin E. and Cherkasov N.Transneft economic strategy on the eve of 21st century. : .

MLA

Chernyaev V.D, Yasin E.M, Cherkasov N.M, World Petroleum Congress (15th. : 1997 : Beijing), Yasin E.M and Cherkasov N.M.: . .