Where can I get Some Pastel Chalk

Well, unlike the lovely title, this isn't about pastel chalks, this is an art book expo. I just wanted something creative.
And I am still looking for those chalks.

Anyways, please enjoy my artworks, from black and white sketches, to abstract paintings, these are the things I do in my spare time! I love drawing realistic/semi-realistic faces, and painting landscapes.

Thank you for coming, that's all folks!