9673
While repeating the earlier stories , the later sources of Suetonius and Cassius Dio provide additional tales of insanity .
 Suetonius, Cassius Dio
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Suetonius, Cassius Dio