UN English Programme's List: ELPE Writing

This is a valuable resources that all United Nations staff should know about and use.

This is the on-line version of the Strunk and White Style Manual. (Strunk, William, 1869–1946. The elements of style, by William Strunk, Jr. 1st ed. Ithaca, N.Y.: Priv. print. [Geneva, N.Y.: Press of W.P. Humphrey], 1918.)

The Purdue University On-line Writing Lab (OWL) has many different materials for English Language students and teachers, including resource pages, printer-friendly handouts and exercises.

Ohio University's website is a good resource for many language-related topics and includes links to other university writing centres.