According to the textbook readings, it will be Chapter 14: Leadership, Roles, an

According to the textbook readings,
it will be Chapter 14: Leadership, Roles, and Problem Solving in Groups (thats  the topic) I forgot to mentioned it in the instructions pdf. 
It will need more than 6 sources if you like depending if you find more information. 
Here is an example of a students Group Speech outline as well. 
The readings of the textbook is here as well but you will only be reading Chapter 14 for this assignment.