include sources (books, websites)
131596
When a tennis ball is used it will lose pressure and have less of a bounce.  However, there are devices which allow you to re-pressurize tennis balls and gain some of their original bounce back for a limited time.  The devices often have two parts where one end screws into the other and thus increases the internal pressure of the canister.  The balls inside the canister will eventually reach an equilibrium similar to the pressure inside the canister and this results in an increased bounce.
303189
You can find portions of books on Google Books.  This will allow you to read portions of books from all over the internet.
630896
The website below should be able to provide you with a source to provide assistatnce.
260209
These links may help.
292769
..Hi ...I put some links below...\nKind regards! ..
4741
There are a few of these websites around. You could also just use a Wiki or something.\n\nSource: Save everything you want from multiple websites all in one place at MetaWishlist.com.
282603
The sites below are sites you can look at for reference.
82377
Check the source links below for the information you require.
125122
Here are some website's that will help you with your research.
141256
Follow the links in Source(s) for illustrated instructions.
337597
I've included some links that should help you out.\n\nCheers,\nMatt
425153
click below for lots of information.
301507
generally speaking, it is always better to list sources alphabetically.  i dont think it is a hard fast rule, but you should do it alphabetically.  they should NOT be sorted by type (book, magazine, etc)
543013
Might I suggest a little known item called google, you type in each of the items in your list and I bet 5 minutes each you'll have the whole thing done with references.
242086
Wiki is a great primary resource. Start there, rather than a stodgy government-funded website.
268821
depends on the site...book list web sites i want to see the author, book type..and so on and so forth......games and entertainment....there would be links to games..updated games..stuff like that...hope that helps..
509058
Below are a couple great sites for the information you are needing.