QUICK GUIDES: Chicago Manual of Style vs. AP Stylebook

My cheat sheet is your cheat sheet.
Blue = Chicago (CMS) 
  Orange = AP   Black = Chicago and AP agree.

POST CATEGORIES | Addresses | Citations | Dates | Hyphens | Indexing | Names | Numbers | People | Quotes | Word Usage |
| About CMS vs. AP | My Work | SEARCH SITE |

Is “the” capitalized?

This post currently refers to Chicago style only. Entities and Places Companies and institutions Lowercase “the” in running text, even …

Quotation marks

The following guidelines are taken from Chicago Manual of Style only. (CMS 16 | CMS 17) Skip to: Capitalization of …

Colors: hyphenated or two words?

  Colors are supposed to follow the basic hyphenation rule: hyphenate adjectives before a noun, but not after. (Read more …

Prefixes: One word or hyphenated?

Skip to Quick Glance, Deeper Details, ante, anti**, auto, bi, bio, co**, counter, de, dis, extra, -fold, geo, hydro, hyper, …

Family Words

Skip to grand / great / aunts and uncles: great or grand? / step / in-law. CMS and AP agree …

Plurals and Possessives of Names

Quick glance Ed Smith’s house, the Smiths, the Smiths’ house. But when name ends in s or z: Ed Jones’s …


In general, Chicago likes to spell numbers out, and AP likes to use numerals. The following is for nontechnical material, …

Number Spans and Year Spans

Number Spans, a.k.a. Number Ranges, Inclusive Numbers, Continuing Numbers Quick glance CMS: use en dash 64–68   AP: use hyphen …

Streets and Addresses

  Skip to | Numbered Streets | N E S W | Intersections | Highways | Numbered Streets CMS spells …

What I Do

As a writer, you should write! When you’re in your zone, you shouldn’t have to worry about a million details and rules, or about maintaining absolute consistency. Let me do that for you! I work directly with authors, writers, and publishers on articles, academic papers, and both nonfiction and fiction books.


My goal is not to blindly follow rules or impose authority, but instead to make it as clear and consistent as possible for the reader. I follow style guide rules (Chicago or AP), but sometimes following a rule causes unnecessary awkwardness. In those cases, I refer to my number one goal—to make it clear!


I also write high-quality book indexes that include not just names and terms, but broader concepts. No software or app can write a book index automatically. Beyond marking names and terms, indexing requires thinking like a reader, identifying concepts, removing unhelpful items, organizing it perfectly, and reorganizing it again.

I have ten years of experience working with authors and publishers, eight years of experience working in media and advertising, and a degree in journalism. I have been a full-time freelance copyeditor and indexer since 2016. Words are my passion.