Citation
ʿAbd al-Ḥamīd, Sihām. al-ʿAmal wa-l-Tharwa wa-l-Istithmār: Baḥth fī al-Anthrubūlūjyā al-Iqtiṣādiyya bi-l-Wāḥāt al-Dākhila. Cairo: Jāmiʿat al-Qāhira, Kulliyyat al-Ādāb, Qism al-Ijtimāʿ Firʿ Banī Suwayf, Shuʿbat al-Anthrbūlūjyā, 1992.
ʿAbd al-Ḥamīd, Sihām. al-ʿAmal wa-l-Tharwa wa-l-Istithmār: Baḥth fī al-Anthrubūlūjyā al-Iqtiṣādiyya bi-l-Wāḥāt al-Dākhila. Cairo: Jāmiʿat al-Qāhira, Kulliyyat al-Ādāb, Qism al-Ijtimāʿ Firʿ Banī Suwayf, Shuʿbat al-Anthrbūlūjyā, 1992.