Não informado. (1981). Soviet Engineering Research. Production Engineering Research Association.
Chicago-viite (17. p.)Não informado. Soviet Engineering Research. Melton Mowbray, Inglaterra: Production Engineering Research Association, 1981.
MLA-viite (8. p.)Não informado. Soviet Engineering Research. Production Engineering Research Association, 1981.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.