source: Like previous assessment reports, it consists of four reports, three of them from its working groups.
target: It consists of four reports. Three of them are from its working groups.
references: It consists of four reports. Three of them are from its working groups. It is made of four reports, with three from its working groups, like previous assessment reports. It is made up of four reports. Three out of the four reports are from its working groups. The assessment consists of four reports, three of them from working group. Like earlier evaluation reports it contains four reports, three of them from its working groups. The assessment reports contain three from its working group. There are four assessment reports. Three reports come from working reports. Like usual, it has four assessment reports.  Three of them are from its working groups. Like ones in the past, there are four reports with three from the working groups. Like past assessment reports, it consists of four reports, three from working groups.