Cita APA (7a ed.)
Johnstone, P. (1978). Operation world: A day to day guide to praying for the world. WEC Publications.
Cita Chicago Style (17a ed.)
Johnstone, Patrick. Operation World: A Day to Day Guide to Praying for the World. England: WEC Publications, 1978.
Cita MLA (9a ed.)
Johnstone, Patrick. Operation World: A Day to Day Guide to Praying for the World. WEC Publications, 1978.
Precaución: Estas citas no son 100% exactas.