There is an tool in WIKIPEDIA to convert the webpage into an e publication format (pdf format ) you can study them in your offline – you can save them in your Wikipedia account for future use and download them form it .
You can convert them in to 1.ebook(pdf), 2.wordpreocessor (word document) ,3.kiwix(openzim),4.e book (EPUB). Here is an simple page made converted form webpage to e readable format (Here is an example) .
STEPS TO CREATE EBOOK IN WIKIPEDIA :
Quick guidelines to get wikipedia page offline mode
1. Click here to enable the online pdf creation (book mode) mode in wikipedia enable them in your account after signing in to your account. or there will an option called create book mode in toolbox of left side corner .
2. Browser any topic in wikipedia to add them in your in your book mode click on “Add this page to your book” tool box right side to queue them into your book .
3.click on your books(counts) to view your collection of books (bundle of favorite pages) in your account give them a topic and subtopic, download them from your account as format you want .
Epub is the format you can view them in your mobile , tablets , as like pdf reader application for your handheld devices.