APA (7th ed.) Citation

The R Development Core Team. (2004). R reference manual base package (1a. ed.). Network Theory Limited.

Chicago Style (17th ed.) Citation

The R Development Core Team. R Reference Manual Base Package. 1a. ed. Bristol: Network Theory Limited, 2004.

MLA (9th ed.) Citation

The R Development Core Team. R Reference Manual Base Package. 1a. ed. Network Theory Limited, 2004.