Dyfyniad APA

Greeley, A. M. (1964). The challenge of living: Letter to a young man. Ave Maria Press.

Dyfyniad Arddull Chicago

Greeley, Andrew M. The Challenge of Living: Letter to a Young Man. Notre Dame, Ind.: Ave Maria Press, 1964.

Dyfyniad MLA

Greeley, Andrew M. The Challenge of Living: Letter to a Young Man. Ave Maria Press, 1964.

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