外文期刊只有卷号没有期号怎么写格式

英文文献只有卷没有期可以直接写他的doi有些期刊只有期号而没有卷号,是以其出版年作为卷号

[1]A Dose of Reality:Current World Economic Prospects[J]China International Studies,2012,01:25-摘要：<正>Since 2011, the recovery of the world economy has beenthwarted while "the South overmatching the North" hascontinued The slowdown of Western economieshas increased numerous risk factors: the sluggishness of USeconomy, intensified European debt crisis, and the negative【遇到这种问题，在你搜索论文的页面上有个“导出 / 参考文献” 点这个选项就可以看到啦，很简单，附图片，你一眼就明白啦。】