Não informado. USSR and eastern europe scientific abstracts. Joint Publications Research Service.
Citação do estilo Chicago (17ª ed.)Não informado. USSR and Eastern Europe Scientific Abstracts. Arlington, Wash: Joint Publications Research Service.
Citação MLA (8ª ed.)Não informado. USSR and Eastern Europe Scientific Abstracts. Joint Publications Research Service.
警告：这些引文格式不一定是100％准确.