You can insert Calameo docs, by turning the original embed code into the appropriate shortcode.
(For more on this, see The gigya shortcode: inserting Flash. Also note that Calameo provide their own “WordPress” shortcode, but that shortcode doesn’t work.)
Select doc, click Share. Copy HTML code (old version). Keep this part only:
Turn it to this:
Paste into HTML post or page editor (or into a text widget for your sidebar). Dimensions can be changed.