Michael, M. M., Synon, M., & Johnson, G. (1955). This is our land (New ed.). Ginn.
Dyfyniad Arddull ChicagoMichael, Margaret M., Mary Synon, and George Johnson. This Is Our Land. New ed. Boston: Ginn, 1955.
Dyfyniad MLAMichael, Margaret M., et al. This Is Our Land. New ed. Ginn, 1955.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.