Here you can find information about the rules of the different alphabets. (Most of the linked documents are in German.)
- Arabic transliteration rules [EROMM]
- DIN Standard 31635 for the transcription of Arabic [Wikipedia]
- The classic DMG transliteration rules of the Arabic script from 1935 [book on MENAdoc]
- Persian transliteration rules (EROMM)
- Marburg guide to the transcription of New Persian [PDF]
- Iranian languages in Cyrillic script [PDF]
- Transcription for Turcica (Turkish languages in Cyrillic script) [PDF]
- Ottoman titles are reproduced in modern Turkish spelling (see Özege: Eski harflerle basılmış Türkçe eserler kataloğu, 1971-82).
- In the case of the Azerbaijani Latin alphabet, please transliterate the letter “ə” with “ä”.