Eastern voices
MLA
Scheffer, Frank, et al. Eastern Voices. [Berlin, Germany]: EuroArts Music International GmbH , 2011
APA, 7th edition
Scheffer, F., Wallbrecht, G., Dreyer, M., Mashayekhi, N., Iskandar, N., Keivo, I., ʻAqīlī, S., & Heinecke, C. (2011). Eastern voices. [Berlin, Germany]: EuroArts Music International GmbH
Chicago, 17th edition
Scheffer, Frank., Günter Wallbrecht, Michael Dreyer, Nader Mashayekhi, Nūrī Iskandar, Ibrahim Keivo, Sālār ʻAqīlī, and Christian Heinecke. Eastern voices. [Berlin, Germany]: EuroArts Music International GmbH , 2011