| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Big Bang Theory 2020 Calendar - Official Square Wall Format Calendar | 978-1-83854-051-7 (1-83854-051-2) | 2019 |
| Big Bang Theory Official 2018 Calendar - Square Wall Format Calendar | 978-1-78549-338-6 (1-78549-338-8) | 2017 |