Cita APA (7th ed.)

Graham, B. (1986). Angels: God's secret agents (Rev. and expanded ed.). Word Books.

Cita Chicago (17th ed.)

Graham, Billy. Angels: God's Secret Agents. Rev. and expanded ed. Waco, Tex: Word Books, 1986.

Cita MLA (9th ed.)

Graham, Billy. Angels: God's Secret Agents. Rev. and expanded ed. Word Books, 1986.