For the BEST manual and guidance for the BEST assessments and intervention see the Assessment page and the Delivering BEST page.

MirpuriAssessmentandTherapyRecordBooklet (pdf)

After each BEST session children should be given a booklet to look at with their family. Each booklet has pictures showing the sentences the child will have seen during the session. In most of the booklets the sentence is written underneath.  

For languages without a written form you can use booklets without words so they can just describe what is in the picture. These booklets are available here.