Bombus (Subterraneobombus) fragrans Pallas, 1771
- Alireza, M., A. Talebi, G. Tahmasbi, P.H. Williams, E. EbrahimiI & A. Taghavi 2007. Bumblebees of Iran: Localities and Food-Plants, with Additions and Corrections (Hymenoptera: Apidae: Bombus). Entomologia generalis.
- Filatov, M.A., Ivanov, S.P., Budashkin, Y.I. 2006. .
- Nieto, A., Roberts, S.P.M., Kemp, J., Rasmont, P., Kuhlmann, M., García Criado, M., Biesmeijer, J.C., Bogusch, P., Dathe, H.H., De la Rúa, P., De Meulemeester, T., Dehon, M., Dewulf, A., Ortiz-Sánchez, F.J., Lhomme, P., Pauly, A., Potts, S.G., Praz, C., Quaranta, M., Radchenko, V.G., Scheuchl, E., Smit, J., Straka, J., Terzo, M., Tomozii, B., Window, J. and Michez, D. 2014. European Red List of bees. Luxembourg: Publication Office of the European Union.