Where Should I Add Google Retargeting Code in Marketo?

[Anonymous]

We would like to run a Google retargeting campaign to those who have visited our Marketo landing page. Where should the code be added?

Many thanks in advance guys!

[Anonymous]

Here is an example of a client doing retargeting campaigns using Marketo with JavaScript on landing pages and interstitial pages.  

https://community.marketo.com/MarketoDiscussionDetail?id=90650000000PTFFAA4