Typography pocket essentials, 2014. sol. (Alaistar Campbell)

WWW BL, Dic. 27, 2016. Campbell, Alastair, 1947- http://primocat.bl.uk/F/?func=direct&local_base=PRIMO&doc_number=016483130&format=001&con_lng=eng

WWW VIAF, Dic. 27, 2016. Campbell, Alastair, 1947- http://viaf.org/viaf/117150734

WWW BNF, Dic. 27, 2016. Alastair Campbell (1947-....) http://data.bnf.fr/14427327/alastair_campbell/#allmanifs