Printing only a selected sheet

I have a workbook (in .docx format) with several sheets. When I try to print only one selected sheet to PDF format, it creates a single PDF file with ALL the sheets included as separate pages of the pdf. How can I print only one selected sheet?
Thanks in adance to whoever helps me!

Faq/Calc - The Document Foundation Wiki #Printing

Thanks for the FAQ link, but I couldn’t find an answer to my specific question there, that is why I raised this query in this forum.
I would like to repeat my question. Whenever I try to print (to pdf) any one selected sheet of the workbook, the result is a multi page pdf with ALL the worksheets. I also enable the “Selection” option in the print dialog.
It is frustrating to manully remove all the superfluous pages from the pdf document after creation.

Ask/Guide - How to use the Ask site - The Document Foundation Wiki #More_details

We understand correctly that this is
Menu / File / Export as PDF... ?