APA (7th ed.) Citation
Foster, C. W. (2000). God's key to the world. S.I.M International.
Chicago Style (17th ed.) Citation
Foster, Charles W. God's Key to the World. Cedar Grove: S.I.M International, 2000.
MLA (9th ed.) Citation
Foster, Charles W. God's Key to the World. S.I.M International, 2000.
Warning: These citations may not always be 100% accurate.