Usually, square brackets, as in "President [Obama] was not amused"
Ray Jutkins has written: 'Direct marketing' -- subject(s): Direct marketing
Todd Harris has written: 'Direct advertising' -- subject(s): Advertising, Direct-mail
Emma Starling has written: 'Connexions Direct'
Otmar Jung has written: 'Direct democracy in Germany'
Graeme McCorkell has written: 'Direct and Database Marketing'
Allan Dale has written: 'Direct mail list building'
Malin Ullern has written: 'Norwegian foreign direct investment'
Christian Brann has written: 'Kemble, Ewen and Poole Keynes' 'Direct mail and direct response promotion' -- subject(s): Advertising, Direct-mail
Ronald A. Bernstein has written: 'Successful direct selling' -- subject(s): Direct selling, New business enterprises
Direct citation is the practice of quoting an author's exact words from a source in a piece of writing or speech. It involves using quotation marks to indicate the text is directly from the source and providing a citation to credit the original author.
Hempstead Stratton Bull has written: 'Direct-current machinery' -- subject(s): Direct current, Electric machinery
T. J. Tedesco has written: 'Direct mail pal--Canada' -- subject(s): Advertising, Direct-mail