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If your inspiration story is in the public domain (which all of Shakespeare is), you have no legal obligation to disclose your source material. Though with Shakespeare, people will of course figur...
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#4: Attribution notice removed
Source: https://writers.stackexchange.com/a/42296 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#3: Attribution notice added
Source: https://writers.stackexchange.com/a/42296 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
**If your inspiration story is in the public domain (which all of Shakespeare is), you have no legal obligation to disclose your source material.** Though with Shakespeare, people will of course figure it out. The musical _West Side Story_ is a well-known retelling of _Romeo and Juliet_. It was in fact [pitched to producers](https://en.wikipedia.org/wiki/West_Side_Story) as such and of course all the reviews mention it. > _West Side Story_ is a musical with book by Arthur Laurents, music by Leonard Bernstein and lyrics by Stephen Sondheim. It was inspired by William Shakespeare's play Romeo and Juliet. ([ref](https://en.wikipedia.org/wiki/West_Side_Story)) A 1961 movie poster doesn't mention R&J though (I can't read the fine print so maybe it's there). [![enter image description here](https://i.stack.imgur.com/hMGAI.png)](https://i.stack.imgur.com/hMGAI.png) **If your inspiration story is not in the public domain, then you need permission from the copyright holders before you proceed.** If they grant it, they will advise you on how to cite. **But what if your inspiration story is in the public domain but obscure?** I would put it in the acknowledgments, if not the title page. **And if the story is not public domain but your inspiration is slight?** That's the trickier one. The answer is "it depends." But err on the side of caution and get permission. Or change your story even more.