Arrupe, P., & Aixala, J. (1979). Challenge to religious life today (2d ed.). Institute of Jesuit Sources ; Gujarat Sahitya Prakash.
Čikaški stil citiranja (17. izdanje)Arrupe, Pedro, i Jerome Aixala. Challenge to Religious Life Today. 2d ed. St. Louis : Anand, India: Institute of Jesuit Sources ; Gujarat Sahitya Prakash, 1979.
MLA način citiranja (8. izdanje)Arrupe, Pedro, i Jerome Aixala. Challenge to Religious Life Today. 2d ed. Institute of Jesuit Sources ; Gujarat Sahitya Prakash, 1979.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.