Tolong jelaskan mengenai Sumber dari Nikolai (Ono)

Ushimaru, Proclus (Yasuo), Priest, Kami no Mimune ni Ikita Gekidō no Shimobetachi, Tokyo, Office of the Metropolitan, the Japanese Orthodox Church, 1985.

Masatoshi John Shoji, The Orthodox Church of Japan, 1912-1954: A Time of Troubles, Master's Thesis, St Vladimir's Orthodox Theological Seminary, Crestwood, New York, May 2007