APA
Bent A. J. v. d. (., . (1981). Major studies and themes in the ecumenical movement. Geneva: World Council of Churches.
Chicago
Bent Ans J van der (ed), . 1981. Major studies and themes in the ecumenical movement. Geneva: World Council of Churches.
Harvard
Bent A. J. v. d. (., . (1981). Major studies and themes in the ecumenical movement. Geneva: World Council of Churches.
MLA
Bent Ans J van der (ed), . Major studies and themes in the ecumenical movement. Geneva: World Council of Churches. 1981.