APA (7th ed.) Citation

Tretjakewitsch, L., Treadgold, D. W., & Herbigny, M. d. (1990). Bishop Michel d'Herbigny SJ and Russia: A pre-ecumenical approach to Christian unity. Das östliche Christentum.

Chicago Style (17th ed.) Citation

Tretjakewitsch, Léon, Donald W. Treadgold, and Michel d' Herbigny. "Bishop Michel D'Herbigny SJ and Russia: A Pre-ecumenical Approach to Christian Unity." Das östliche Christentum 1990.

MLA (8th ed.) Citation

Tretjakewitsch, Léon, et al. "Bishop Michel D'Herbigny SJ and Russia: A Pre-ecumenical Approach to Christian Unity." Das östliche Christentum, 1990.

Warning: These citations may not always be 100% accurate.