Dyfyniad APA

Holbrook, S. H. (1947). The story of American railroads. New York: Crown Publishers.

Dyfyniad Arddull Chicago

Holbrook, Stewart H. The Story of American Railroads. New York: Crown Publishers, 1947.

Dyfyniad MLA

Holbrook, Stewart H. The Story of American Railroads. New York: Crown Publishers, 1947.

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