Here are a few key concepts to get you started in the complex world of referencing another person's material.
Plagiarism vs Homage
Parody vs Homage
Legal Issues of Writing a Parody
Character Names and Homage
Note that I am not a lawyer, so if you are working on a book which has substantial references to another brand, product, or work, it would be wise for you to consult with a lawyer before that book gets published and seen by others.
What Does It Cost to Ghostwrite a Book?
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