Well, if you prefer to use the numbers, we could say:
...from 10/4/2008 to 30/4/2009.
(We sometimes do it that way in English dates too, if it is clear which is the month and which the day.)
Or:
...from 10 April 2008 to 30 April 2009.
This is sometimes written with commas, like this:
...from 10 April, 2008 to 30 April, 2009.
You can finally also write it in the "American order" without the "
th"s too, as:
...from April 10, 2008 to April 30, 2009.
Anyway, many possibilities, for you to choose from!
Please make your choice, and then put it in your translation!