APA

Leong A, . (1990). The Millenium: Christianity and Russia (a. d. 988 — 1988). N.-Y: St. Vladimir's seminary press.

Chicago

Leong A, . 1990. The Millenium: Christianity and Russia (a. d. 988 — 1988). N.-Y: St. Vladimir's seminary press.

Harvard

Leong A, . (1990). The Millenium: Christianity and Russia (a. d. 988 — 1988). N.-Y: St. Vladimir's seminary press.

MLA

Leong A, . The Millenium: Christianity and Russia (a. d. 988 — 1988). N.-Y: St. Vladimir's seminary press. 1990.