In a similar question on EL&U, I asked about suggestions for indicating that a quote is written instead of spoken.
Robusto's answer suggested several possible approaches:
For longer quotes of written text, use a form of block quote
Shorter sections can be highlighted in a special font or all caps
DO NOT ENTER, the sign seemed to scream at me as I approached.
My first thought was to simply italicize the quoted text:
I know who the killer is, she wrote, but she never managed to send her message.
I wanted to pose this question to this community, as it relates to writing style more than the formal conventions of English.
What approach would you recommend?