How can I render a partial from other controller?

I use this code to render a partial:

<%= render :partial=>'test' %>

The test is not located in the current controller. How can I point it to
other place?

<%= render :partial => 'people/test' %>

In this case, the name of the controller is PeopleController. See the
documentation for partial rendering: http://api.rubyonrails.org/classes/ActionView/Partials.html