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Lady Gaga : Queen of Pop is a biography of American recording artist Lady Gaga , written by Emily Herbert ( pen name for Virginia Blackburn ) and published in the United Kingdom by John Blake Publishing Ltd. It was published by Overlook Press in the United States , with the title Lady Gaga : Behind the Fame .
 Lady Gaga, Lady Gaga, John Blake Publishing Ltd., Overlook Press, Lady Gaga
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Lady Gaga, Lady Gaga, John Blake Publishing Ltd., Overlook Press, Lady Gaga