Problem trying to generate cube

Hi guys, I have encountered a huge problem :(

So I decided to ask you guys for help, the assignment is explained bellow.

Cartesian coordinates of a cube are theese:

(±1,±1,±1)

I want to make a cube so these given numbers would reflect its dimensions. 

Vertices of the cube should be 

 X Y Z 

 1 1 1 

-1 1 1 

-1-1 1

-1-1-1

 1-1-1

 1 1-1

 1-1 1

-1 1-1

I total there are 24 points where 12 points have negative values and 12 - positive.

So my question would be how to generate a cube using only these cartesian coordinates which are up above in the begining of the post.

Thank you in advance and please forgive my "noobiness" :)