15938
First published in 1979 by Viking Press , it was later republished in a revised and expanded edition by Beacon Press in 1986 , with third and fourth revised editions being brought out by Penguin Books in 1996 and then 2006 respectively .
 Viking Press, Beacon Press, Penguin Books
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Viking Press, Beacon Press, Penguin Books