Dyfyniad APA

Gray, R., & Argyle, C. (1990). Chronicle of the First World War: A chronology of the First World War. Facts on File.

Dyfyniad Arddull Chicago

Gray, Randal, and Christopher Argyle. Chronicle of the First World War: A Chronology of the First World War. New York: Facts on File, 1990.

Dyfyniad MLA

Gray, Randal, and Christopher Argyle. Chronicle of the First World War: A Chronology of the First World War. Facts on File, 1990.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.