APA-čujuhus (7. p.)
Winter, R. D. (1970). The twenty ubeliverble years 1945 to 1969. William carey library.
Chicago-čujuhus (17. p.)
Winter, Ralph D. The Twenty Ubeliverble Years 1945 to 1969. California: William carey library, 1970.
MLA-čujuhus (9. p.)
Winter, Ralph D. The Twenty Ubeliverble Years 1945 to 1969. William carey library, 1970.
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