APA

Nissiotis N. A., Lazareth W. H. & Gregorios P. (1981). DOES Chalcedon divide or unite. Genéve: World Council of Churches.

Chicago

Nissiotis Nikos A, Lazareth William H and Gregorios Paulos. 1981. DOES Chalcedon divide or unite. Genéve: World Council of Churches.

Harvard

Nissiotis N. A., Lazareth W. H. and Gregorios P. (1981). DOES Chalcedon divide or unite. Genéve: World Council of Churches.

MLA

Nissiotis Nikos A, Lazareth William H and Gregorios Paulos. DOES Chalcedon divide or unite. Genéve: World Council of Churches. 1981.