[1] Books, 1 author

Use the Book, Whole reference type for single or multiple author books.

[1] E. R. Tufte, Visual Explanations: Images and Quantities, Evidence and Narrative. Cheshire, CT: Graphics Press, 1996.

1. Note that, although the title in the RefWorks record is upper and lower case, it is correctly changed to "title case" in the bibliography.