1. k&r.

2. The fourth book in adobe systems, inc.'s postscript series, describing the previously-secret format of type 1 fonts. The other three official guides are known as the blue book, the green book, and the red book.

["Adobe Type 1 Font Format, version 1.1", Addison-Wesley, 1990 (ISBN 0-201-57044-0)].

3. white book cd-rom.

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