Amazon
| № п/п | Страна магазина / Country | Название произведения / Title | Формат произведения / Format |
| 1 | United States | Unified system of knowledge | eBook (kindle) |
| 2 | United Kingdom | Unified system of knowledge | eBook (kindle) |
| 3 | Germany | Unified system of knowledge | eBook (kindle) |
| 4 | France | Unified system of knowledge | eBook (kindle) |
| 5 | Spain | Unified system of knowledge | eBook (kindle) |
| 6 | Italy | Unified system of knowledge | eBook (kindle) |
Lulu
| № п/п | Страна магазина / Country | Название произведения / Title | Формат произведения / Format |
| 1 | United States, United Kingdom, Deutschland, France, Italia, Nederland, Espana, Canada, Australia, Ireland, Schweiz | Unified system of knowledge | eBook (ePub) |
XinXii
| № п/п | Страна магазина / Country | Название произведения / Title | Формат произведения / Format |
| 1 | English (US) | Unified system of knowledge | eBook (pdf) |
| 2 | English (UK) | Unified system of knowledge | eBook (pdf) |
| 3 | Deutsch | Unified system of knowledge | eBook (pdf) |
| 4 | Español | Unified system of knowledge | eBook (pdf) |
| 5 | Français | Unified system of knowledge | eBook (pdf) |
| 6 | Italiano | Unified system of knowledge | eBook (pdf) |
| 7 | Nederlands | Unified system of knowledge | eBook (pdf) |
| 8 | Português | Unified system of knowledge | eBook (pdf) |
| 9 | Россия | Unified system of knowledge | eBook (pdf) |