APA (7th ed.) Citation

Petr, M. History as Vocation of Theology. St. Tikhon's Orthodox University.

Chicago Style (17th ed.) Citation

Petr, Mikhailov. History as Vocation of Theology. St. Tikhon's Orthodox University.

MLA (9th ed.) Citation

Petr, Mikhailov. History as Vocation of Theology. St. Tikhon's Orthodox University.

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