Roget's international thesaurus.

The professional writing guide : writing well and knowing why / Roslyn Petelin and Marsha Durham.

Right words : a guide to English usage in Australia / Stephen Murray-Smith.

Collins Australian gem English dictionary / Australian editor, W.A. Krebs.

Engineered writing : a manual for scientific, technical, and business / by Melba Jerry Murray and Hugh Hay-Roe.

Grammar and punctuation / [compiled by Deryk Charles]

The Oxford dictionary for writers and editors / compiled by the Oxford English Dictionary Department.

The chemist's English / Robert Schoenfeld.