Ṣifat al-maʻmūrah ʻalá al-Bīrūnī : min "al-Qānūn al-masʻūdī li-Abī al-Rayhān Muḥammad ibn Aḥmad al-Khuwārizmī al-Bīrūnī wa-thalāthah kutub ukhrá lahu: "Taḥd̄d nihāyāt al-amākin li-taṣḥīḥ masāfāt al-masākin" wa "al-jamāhir fi maʻrifat al-jawāhir" wa "al-Ṣaydanah" - Bīrūnī, Muḥammad ibn Aḥmad (Swati Publications, 1991)