| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| Africa: Lonely Planet Phrasebook | 978-1-74059-692-3 (1-74059-692-7) | 2007 | Lonely Planet Phrasebooks | |
| Proceedings of the 2nd World Congress of African Linguistics, Leipzig 1997 | 978-3-89645-124-8 (3-89645-124-3) | 2000 | H. Ekkehard Wolff · Orin D. Gensler · Mohamed H. Abdulaziz · Mahamam Bachir Attouman · Ayo Bamgbose · Steve Barrett · Roger M. Blench |