Respuesta :

youngwiz89
true, you should always have a source to back up your statements and facts. The best way for a teacher/colleague to acknowledge the source as credible   
You should always look up the documentation (sources) of your sources. 
This would be a true statement. 

Reasoning: You want to look it up because you don't want to have a source that is unreliable. 

HOPE THIS HELPS! ^_^