Copy the Sidebar Widget HTML code:
Login to your vCita dashboard, click on Publish menu and select Add to Website. Click on Edit next to the Sidebar Widget option to customize and design your widget.
Click Add To Website button and select Other websites
Copy the HTML code
Add the code to your Blogger site:
Login to your Blogger account
On you Blogger account go to "Layout" and choose "Add a Gadget" 
Search and select "HTML/JavaScriptAdd"
On the "Configure HTML/JavaScript" window, set the title as "Sidebar" and simply paste the HTML code copied form vCita in the Content field.
Click on Save.
Then drag the widget box to the desired location on the page.