Dyfyniad APA

Ryan, J. H. (1922). A catechism of Catholic education. Washington, D.C..

Dyfyniad Arddull Chicago

Ryan, James H. A Catechism of Catholic Education. Washington, D.C., 1922.

Dyfyniad MLA

Ryan, James H. A Catechism of Catholic Education. Washington, D.C., 1922.

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