Q. Hi- How do I cite a section of this document (APA) in text? In my reference section?For example there are 13 stories included in this document

The ProQuest link you provided did not work, but I think you are referring to is this document:

http://unesdoc.unesco.org/images/0011/001102/110238eo.pdf

The typical APA citation format for a government document, in this case one issued by UNESCO, would follow the example here: Government Document.  This document, however, is a more a compilation, and because you are citing individual chapters within it, your citation should be further detailed to reflect that (example, here: Article of Chapter in an Edited Book.

I would cite the second chapter like this.  I can't guarantee the precise spacing and formatting in our Ask-a-Librarian text editor, but the sequence of information is correct:

Quiroz, E. L. (1997). Special educational needs in early childhood care and education in the

    Junji (Junta Nacional de Jardines Infantiles) of Chile. In United Nations Educational, Scientific

    and Cultural Organization, First steps: stories on inclusion in early childhood education

    (pp. 15-22). Paris: UNESCO.