APA

Sibilev Mikhail,, . (1988). A safeguard of peace. Moscow: Progress Publishers.

Chicago

Sibilev Mikhail,, . 1988. A safeguard of peace. Moscow: Progress Publishers.

Harvard

Sibilev Mikhail,, . (1988). A safeguard of peace. Moscow: Progress Publishers.

MLA

Sibilev Mikhail,, . A safeguard of peace. Moscow: Progress Publishers. 1988.