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Your questions and comments are very important to us. Please select the type of inquiry from the pull-down list below, and either proceed to the URL provided for more information about that type of query, or fill out the form with required information and click "Submit." Incomplete or incorrect information may delay your request. You may also browse our Frequently Asked Questions for answers to common inquiries. Submitting a comment or question via the Contact Us form will not add you to any mailing list.

Order problems: If you receive a credit card processing error message or have some other problem when attempting to submit an order, please note that the country specified in the shipping information for your order must match the country specified in your billing information. If the countries match, but you continue to receive errors, please send a detailed e-mail to

Due to the volume of mail received, we cannot guarantee a personal response.

Submit Errata

Have you discovered incorrect information in a book? As our goal is to create books of the highest quality and value, we regret any errors and would like to be informed of them. In the Comments field below, please tell us the page number, location of the error on the page (e.g. second paragraph), and description of the error. Thank you for your assistance.

(Enter the 10- or 13-digit ISBN without dashes.)

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