Cita APA (7th ed.)

Graham, B. (1969). The challenge ; sermons from Madison Square Garden. Doubleday.

Cita Chicago (17th ed.)

Graham, Billy. The Challenge ; Sermons from Madison Square Garden. Garden City: Doubleday, 1969.

Cita MLA (9th ed.)

Graham, Billy. The Challenge ; Sermons from Madison Square Garden. Doubleday, 1969.