For citations in prose, use the primary title and surname of the very first writer followed by “and Some others” or “and colleagues.” For parenthetical citations, use just the surname of the primary author accompanied by “et al.” 如果下单时简介里您指定了您想提前查看define或draft，写手就按时发给您。查看草稿后您可以通知写手您的意见。 先找一篇发表时间久远的正儿八经的文章作原材料，然后或... https://essayv.com/