Customer Service

Hours of Operation

8 a.m. to 5 p.m. central standard time, Monday through Friday

For specific matters, please try one of the email addresses or phone numbers listed below.

Customer Service—The Chicago Manual of Style Online

For general inquiries such as payment or credit issues concerning your CMOS Online subscription, or if you have changed email addresses since subscribing, our contact info is below.


Phone 1-877-705-1878 (US and Canada) or 1-773-753-3347 (International).

Customer Service—The Chicago Manual of Style, Print Editions

For delivery, payment, or credit issues concerning book purchases, please email the Chicago Distribution Center.


Phone 1-800-621-2736 (US and Canada) or 1-773-702-7000 (International).