U.P. ยท Uniworld Business Publications Inc.
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Directory of American Firms Operating in Foreign Countries, 19th edition | 978-0-8360-0057-3 (0-8360-0057-9) | 2007 | Inc. |
| Directory of American Firms Operating in Foreign Countries, 20th edition | 978-0-8360-0059-7 (0-8360-0059-5) | 2009 | |
| Directory of Foreign Firms Operating in the United States, 14th edition | 978-0-8360-0058-0 (0-8360-0058-7) | 2008 | |