Add sections to the bookbuilder: To manual workers, supporters of political action (François Dumartheray)

 

With complex structures, e.g., a chapter with subsections, selecting only the chapter is likely to select only the chapter's title, so probably you want to select the chapter and all its subsections.

The text structure is shown below.

 
Section
Select
Title, author, date...
To manual workers, supporters of political action
Source, notes...