دعوت مسيحيان به توحید
| Materyal türü | Basma eser |
| Dil | Farsça |
| Kurum | Internet Archive |
| Kaynak | Internet Archive |
| Not | دعوت مسيحيان به توحید |
دعوت مسيحيان به توحید, Internet Archive, https://archive.org/details/Othmanesmail1961_gmail_20171228.
| Materyal türü | Basma eser |
| Dil | Farsça |
| Kurum | Internet Archive |
| Kaynak | Internet Archive |
| Not | دعوت مسيحيان به توحید |
دعوت مسيحيان به توحید, Internet Archive, https://archive.org/details/Othmanesmail1961_gmail_20171228.