A Brief History R: Past and Future History, Ross Ihaka, Statistics Department, The University of Auckland, Auckland, New Zealand, available from the CRAN website
R Development Core Team. «Writing R Extensions». [Consulta: 14 juny 2012]. «[...] we recommend the consistent use of the preferred assignment operator ‘<-’ (rather than ‘=’) for assignment.»
Jackman, Simon «R For the Political Methodologist» (PDF). The Political Methodologist. Political Methodology Section, American Political Science Association, 11, 1, Spring 2003, pàg. 20–22. Arxivat de l'original el 2006-07-21 [Consulta: 3 agost 2006].Arxivat 2006-07-21 a Wayback Machine.
Jackman, Simon «R For the Political Methodologist» (PDF). The Political Methodologist. Political Methodology Section, American Political Science Association, 11, 1, Spring 2003, pàg. 20–22. Arxivat de l'original el 2006-07-21 [Consulta: 3 agost 2006].Arxivat 2006-07-21 a Wayback Machine.