Oosterwal, G. (1976). Patterns of SDA Church Growth in North America: A preliminary report on the finfings of the factors of church growth in selected churches of the Lake Union Conference of Seventh-day Adventists. Andrews University Press.

Oosterwal, Gottfried. Patterns of SDA Church Growth in North America: A Preliminary Report on the Finfings of the Factors of Church Growth in Selected Churches of the Lake Union Conference of Seventh-day Adventists. Berrien Springs, Michigan: Andrews University Press, 1976.

Oosterwal, Gottfried. Patterns of SDA Church Growth in North America: A Preliminary Report on the Finfings of the Factors of Church Growth in Selected Churches of the Lake Union Conference of Seventh-day Adventists. Andrews University Press, 1976.