The phrase does not correspond to an official or widely known academic work, book, or verified PDF. It is possible the title is a metaphorical or aspirational reference to the beauty and accessibility of mathematical statistics, rather than a direct citation.

In summary, the user's query is multi-faceted: they want a PDF, it needs to be verified, and they want a piece of it. My response should address the lack of official verification, guide them to legitimate sources, and offer alternative ways to access the content, all while encouraging ethical resource usage.

The user also mentions "verified," so they might be concerned about the legitimacy or authenticity of the PDF. If it's a real document, it's important to provide a proper source. Since I can't find a verified source, I should inform the user that this isn't an official publication and might be a user-created content.