Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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