Saberi, E., Hafezi, L., Farhadmolashahi, N. and Mokhtari, M. 2012. Modified Newman and Friedman Extraoral Radiographic Technique. Iranian Endodontic Journal. 7, 2 (Apr. 2012), 74–78. DOI:https://doi.org/10.22037/iej.v7i2.3001.