In Book Printing field, copyright permission usually happens to the trade between different owners. An author who is seeking to quote from a work by another author should seek permission from the publisher of the work, which usually holds the anthology and quotation rights on behalf of the author. It is not necessary to ask for permission under the 1988 Copyright, Designs and Patents Act. The Society of Authors and The Publishers Association have stated that they would usually regard as fair dealing the use of:
A single extract of up to 400 words, a series of extracts to a total of 800 words from a prose work, or a series of extracts to a total of 40 lines from a poem, provided that this did not exceed a quarter of the poem.
The words must be quoted in the context of format. In order to use an illustration contained in another book, permission should be sought from the publisher or original source of the illustration. Obtaining permission to use material from websites is fraught with difficulty, since there may not be a satisfactory paper trail to prove who owns the original copyright.