At least two of your sources need to be a book or book chapter. (Another can be in any category, including a book.)
This EBSCO eBook search below is preconfigured to include
(anthropolog* OR ethno* OR cultur*),
leaving you free to simply search for your own topic within that.
When using EBSCO ebooks:
The links for PDF (or EPUB) will NOT give you the PDF, as in other databases; instead, clicking that will show the text in the embedded viewer in the EBSCOhost interface. You can get PDFs, usually, but it takes an extra step.
the option for “Full Download” requires
So instead, perhaps:
View it in the embedded EBSCOhost viewer and get a PDF with the steps described in the next section.
To get a PDF of the book's pages: