Inc. Oxbridge Communications · **O.C.** · Oxbridge Communications Inc
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| National Directory of Magazines | 978-1-891783-39-5 (1-891783-39-4) | 2007 |
| Standard Periodical Directory | 978-1-891783-59-3 (1-891783-59-9) | 2013 |
| The Standard Periodical Directory | 978-1-891783-66-1 (1-891783-66-1) | 2017 |