| AUTHOR | BIBLIOGRAPHIC REFERENCE |
|---|---|
| Ingrams, Harold | |
| Ingrams 1945 | 1945. From Cana (Husn Ghorab) to Sabbatha (Shabwa): the South Arabian Incense Road. Journal of the Royal Asiatic Society: 169-185. |
| Inizan, Marie-Louise and Ortlieb, Luc | |
| Inizan and Ortlieb 1987 | 1987. Préhistoire dans la région de Shabwa au Yemen du Sud (R.D.P. Yemen). Paléorient, 13/1: 5-22. |