Context:

Explicitly mentioned as the source of a quote from the Sorting Hat, described as coming out in 2003

Context:

Explicitly cited as the source for a quote about the Battle of Hogwarts, noted as published in 2007

Context:

Explicitly mentioned as published in 1997, the main subject of discussion about school stories and their origins

Context:

Mentioned as an example of stories with strong, well-defined characters that appeal to children