- Highly regarded and used by countless students, this effective rhetoric/handbook is ideal for writing courses that focus on the essay. The sixth edition features Langan"s renowned clear writing style and a wide range of writing assignments and activities that reinforce the four essentials of good writing: unity, support, coherence, and sentence skills. "College Writing Skills" comes packaged with a free student CD-ROM, a free registration card for access to the Online Learning Center, and a free user"s guide to help students gain the maximum benefit from the text and electronic materials.