Tolong jelaskan mengenai . dari Pemercaya Lama

Zenkovsky, Serge A.: "The ideology of the Denisov brothers", Harvard Slavic Studies, 1957. III, 49–66

Old Orthodox Prayer Book. Diterjemahkan dan disunting oleh Pimen Simon, Theodore Jurewics, [dan] German Ciuba. Erie, Penn.: Russian Orthodox Church of the Nativity of Christ (Old Rite), 1986. N.B.: Consists of the liturgy of the Old Believers (a.k.a. Old Ritualists), as also now authorized for use in parishes of the canonical Russian Orthodox Church; texts in Russian and English on facing pages. Without ISBN