A. D. H. Bivar (1981). "The Second Parthian Ostracon from Qubmis (Qubmis Commentaries No. 3)". Journal of the British Institute of Persian Studies. 19 (1): 81–84. doi:10.2307/4299707. JSTOR4299707.
Lecoq, Pierre (1983). "Aparna". Encyclopedia Iranica. Vol. 1. Costa Mesa: Mazda Pub.
jstor.org
A. D. H. Bivar (1981). "The Second Parthian Ostracon from Qubmis (Qubmis Commentaries No. 3)". Journal of the British Institute of Persian Studies. 19 (1): 81–84. doi:10.2307/4299707. JSTOR4299707.