Creating a roundup of the 25 best-selling books of all time is harder than it sounds ... and other reference texts are out—the Bible and Mao Tse Tung's Little Red Book would both be in the ...

Excluding various holy texts like the Bible, the Qur'an, the Bhagavad Gita, the Book of Mormon, and Mao Zedong's Little Red ...

Estimates indicate this first book in the series is the best-selling Harry Potter title to date, with roughly 120 million ...