| Amadou, Jacob; Baitoua, Jean-Pierre; Magdeme, Gabriel; Pourtshom, Henri; Douatai, Daniel; Haller, Beat; Lawarum, Ayouba | Zulgo lexicon | 2003 | | Linguistics |
| Scherrer, Elaine Marie | An Overview of Gemzek Narrative Discourse Features | 2012 | | Linguistics |
| Scherrer, Elaine Marie | Un recueil des textes interlinéarisés en langue guemzek | 2016 | | Linguistics |
| Haller, Beat, lexical datacompiler; Robert Hedinger, Android app compiler | Dictionnaire zulgo – français – fulfuldé | 1976 | | Linguistics |
| Haller, Beat and John R. Watters | Topic in Zulgo | 1985 | Studies in African Linguistics | Linguistics |
| Haller, Beat | Dictionnaire zulgo | 2018 | | Linguistics |
| Haller, Beat, Sylvia Hedinger, and Ursula Wiesemann | The verbal complex in Zulgo | 1981 | Africana Marburgensia | Linguistics |
| Haller, Beat | La relative en zulgo | 1989 | | Linguistics |
| Dictionnaire Gemzek: français - anglais - fulfuldé | 2022 | | Linguistics |
| Haller, Beat and AMADOU Jacob, compilers (data); Robert Hedinger, compiler (app) | Dictionnaire zulgo - français - fulfuldé | 2022 | | Linguistics |
| Haller, Beat | Zulgo-French-Fulfulde lexicon | 2003 | | Linguistics |
