APA
Marx P. F. O., . (1994). My 21 Days in Russia and Ukraine. Gaithersburg: Human Life International.
Chicago
Marx Paul Fr O.S.B, . 1994. My 21 Days in Russia and Ukraine. Gaithersburg: Human Life International.
Harvard
Marx P. F. O., . (1994). My 21 Days in Russia and Ukraine. Gaithersburg: Human Life International.
MLA
Marx Paul Fr O.S.B, . My 21 Days in Russia and Ukraine. Gaithersburg: Human Life International. 1994.
