You'll need to do an internet search for a compatible Stylus that was made for your record player. It has to match exactly. It doesn't necessarily have to be made by the same maker though, just compatible.
A search using the words "Pioneer replacement stylus" gets you: http://www.needledoctor.com/Contact/Pioneer_2
and many, many more. Try "Sanyo replacement stylus" and you get http://www.styli.co.nz/sanyo.html
There's lots of them out there for every manufacturer/model.
Better yet, try to look up your stylus part number in your owners manual, if you still have the old one look for a part number on it. Then look it up on EBay or Amazon. It's a lot easier to track one down if you can find the part number of the original part. Since you didn't list what model record player you have you'll just have to start with the manufactures name and start from there. Lots of companies are still out there that sell them. Good luck.
If you need more help let me know. I'll be glad to try and find one for you. I'll need the manufacturer of the record player and the model number.