Dyfyniad APA

Reverend Harold F. Ryan, S.J., Catholic Authors Collection. William H. Hannon Library.

Dyfyniad Arddull Chicago

Reverend Harold F. Ryan, S.J., Catholic Authors Collection. William H. Hannon Library.

Dyfyniad MLA

Reverend Harold F. Ryan, S.J., Catholic Authors Collection. William H. Hannon Library.

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