APA (7th ed.) Citation
Johnstone, P. J. S. G. (1993). Operation world: A day-by-day guide to praying for the world. Zondervan Pub. House.
Chicago Style (17th ed.) Citation
Johnstone, Patrick J. St. G. Operation World: A Day-by-day Guide to Praying for the World. Grand Rapids, Mich.: Zondervan Pub. House, 1993.
MLA (9th ed.) Citation
Johnstone, Patrick J. St. G. Operation World: A Day-by-day Guide to Praying for the World. Zondervan Pub. House, 1993.
Warning: These citations may not always be 100% accurate.