APA
Staff of Graymoor Ecumenical & Interreligious Institute, . (2015). Week of prayer for Christian unity 2016 "called to proclaim the mighty acts of the Lord" (cf. 1 Peter 2: 9). New York: Graymoor Ecumenical & Interreligious Institute.
Chicago
Staff of Graymoor Ecumenical & Interreligious Institute, . 2015. Week of prayer for Christian unity 2016 "called to proclaim the mighty acts of the Lord" (cf. 1 Peter 2: 9). New York: Graymoor Ecumenical & Interreligious Institute.
Harvard
Staff of Graymoor Ecumenical & Interreligious Institute, . (2015). Week of prayer for Christian unity 2016 "called to proclaim the mighty acts of the Lord" (cf. 1 Peter 2: 9). New York: Graymoor Ecumenical & Interreligious Institute.
MLA
Staff of Graymoor Ecumenical & Interreligious Institute, . Week of prayer for Christian unity 2016 "called to proclaim the mighty acts of the Lord" (cf. 1 Peter 2: 9). New York: Graymoor Ecumenical & Interreligious Institute. 2015.