Cassles, J. W. W. (1964). How to write successful sales letters. Business publications.
Chicago Edition CitationCassles, J. W. W. How to Write Successful Sales Letters. London: Business publications, 1964.
MLA Edition CitationCassles, J. W. W. How to Write Successful Sales Letters. Business publications, 1964.
Warning: These citations may not always be 100% accurate.