Cita APA (7th ed.)

Engel, J. F., & H., W. (1978). What's gone wrong with the harvest? A communication strategy for the church and world evangelization. Zondervan.

Cita Chicago (17th ed.)

Engel, James F., i Wilbertton H. What's Gone Wrong with the Harvest? A Communication Strategy for the Church and World Evangelization. Zondervan, 1978.

Cita MLA (9th ed.)

Engel, James F., i Wilbertton H. What's Gone Wrong with the Harvest? A Communication Strategy for the Church and World Evangelization. Zondervan, 1978.