Sum cell in a particular row if the column title is equal to particlar value

Hey,

Need Help,

I am working on a proforma statement, REFER THE ATTACHMENT

A B C D E F G H I J Q
1 jun'14 jun'14 jun'14 jul'14 jul'14 jul'14 Aug'14 Aug'14 Aug'14
2 beg. Inv Purchas Unit Sold Beg. Inv Purchas Unit Sold Beg. Inv Purchas Unit Sold
3 foundation 4 10 11 3 15 13 5 16 18
4 Lipstick 4 10 11 3 15 13 5 16 18
5 Shimmer 4 10 11 3 15 13 5 16 18
6 Powders 4 10 11 3 15 13 5 16 18
7 Nail Lacquer 4 10 11 3 15 13 5 16 18
8 Eye Shadows 4 10 11 3 15 13 5 16 18
9
10
11 Total Purchase for june to aug 2014
12 Foundation ??

this is just an small sample of what i am working on i have got purchases, cogs and ending invenory for 2 years Products wise i want to add purchases for the particular product.
i.e. if for above data i want to find out the foundation purchased through june 2014 to aug 2014 what will be the formula

EXCEL QUERY (1).jpg

want to add purchases for all the foundation for year 2014

attached is the file

Sheet title is

Sheet name is "Purchase A"

there are purchases value given for each product month wise..
Below i want to summarize and add all the values of foundation purchased in 2014 and 2015 so on!

Please Help! i am really bad at excel