Dyfyniad APA
Armstrong, D. G., & Savage, T. V. (1990). Secondary education: An introduction (2nd ed.). Macmillan.
Dyfyniad Arddull Chicago
Armstrong, David G., and Tom V. Savage. Secondary Education: An Introduction. 2nd ed. New York: Macmillan, 1990.
Dyfyniad MLA
Armstrong, David G., and Tom V. Savage. Secondary Education: An Introduction. 2nd ed. Macmillan, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.