I.R. · R. F. · R.R. · Robert F.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| An Introduction to Geography from a Christian World View | 978-1-4652-3929-7 (1-4652-3929-4) | 2014 |
| Human Geography: An Interactive Approach from a Christian World View | 978-0-7575-9656-8 (0-7575-9656-8) | 2011 |