Help with simple PHP if/then or if/else statements

I need help with PHP if/then statements. I am using the FeedWordpress plugin and I am using the following code:

<?php if (is_syndicated() and (get_the_author() !== get_syndication_source())):
echo ' <a target="_blank" href="'; the_syndication_source_link();
echo '">';
the_syndication_source();
echo '</a>';
endif; ?>

The code above prints out the URL for the syndicated source, and works great.

However, I am also posting my own posts on my blog, and I want something to show up instead of the URL if it is a post from my own blog. Therefore, I need some simple suggestions on how to change the code above into an if/else or if/then statement to show some other text if the post is NOT a syndicated post. (I’m not a PHP guru so my vocabulary might be incorrect)

Tks!