Karen Swan; Aimee L. Whiteside; Amy Garrett Dikkers; Charlotte Nirmalani Gunawardena <br/><br/>
Social Presence in Online Learning  Multiple Perspectives on Practice and Research 

 -  Taylor and Francis  2017 
<br/><br/><label>ISBN: </label>9781003447023 
<br/><br/><label>Source: </label>EBOOK