O'Donnell, M., & Todd, D. (1957). Workbook for Down the river road. Row, Peterson and Company.
Dyfyniad Arddull ChicagoO'Donnell, Mabel, and Dorothy Todd. Workbook for Down the River Road. Evanston, Illinois ; White Plains, New York: Row, Peterson and Company, 1957.
Dyfyniad MLAO'Donnell, Mabel, and Dorothy Todd. Workbook for Down the River Road. Row, Peterson and Company, 1957.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.