Dyfyniad APA
Winter, R. D. (1970). The twenty ubeliverble years 1945 to 1969. William carey library.
Dyfyniad Arddull Chicago
Winter, Ralph D. The Twenty Ubeliverble Years 1945 to 1969. California: William carey library, 1970.
Dyfyniad MLA
Winter, Ralph D. The Twenty Ubeliverble Years 1945 to 1969. William carey library, 1970.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.