First, log into your Sonis account and bring your attention to the menu on the left side of the screen. There you will see "Current Bill" as an option to click on. Click on it and either click "Undergraduate e-Bill" or "Graduate e-Bill" depending on what program you are in.
After picking your program, simply click the "Click here to view statement" link. Your e-bill (if available) should open in a pop-up window. If it does not, please make sure that your browser does not have pop-ups blocked for Sonis.