Dyfyniad APA

Heltshe, F. J. The Catholic scientist. Catholic Information Society.

Dyfyniad Arddull Chicago

Heltshe, Francis J. The Catholic Scientist. New York, N.Y.: Catholic Information Society.

Dyfyniad MLA

Heltshe, Francis J. The Catholic Scientist. Catholic Information Society.

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