Where to put tracking pixels in WP code?

I’m about to start an advertising campaign. The ad agency needs to put tracking pixels on the pages that people will go to from the ads.

They say to put the tracking pixels just before the </body> tag. There are no </body> tags on these pages! I asked them what to do, and they said to ask WordPress support.

Help!

Here are the four pages involved –

http://safemoneyproducts.com/make-15-in-under-an-hour-a-month/
http://safemoneyproducts.com/who-else-wants-to-learn/
http://safemoneyproducts.com/do-you-make-15-in-under-an-hour-a-month/
http://safemoneyproducts.com/may-i-ask-you-a-personal-question/

Could someone help me know where to put the tracking pixels if there’s no </body>?