Dyfyniad APA

LeTourneau, R. (1975). Keeping your cool in a world of tension. Zondervan.

Dyfyniad Arddull Chicago

LeTourneau, Richard. Keeping Your Cool in a World of Tension. Michigan: Zondervan, 1975.

Dyfyniad MLA

LeTourneau, Richard. Keeping Your Cool in a World of Tension. Zondervan, 1975.

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