APA (7e ed.) Bronvermelding

Gibbs, N., & Duffy, M. (2007). The preacher and the presidents: Billy Graham in the White House. Center Street.

Chicago (17e ed.) Bronvermelding

Gibbs, Nancy, en Michael Duffy. The Preacher and the Presidents: Billy Graham in the White House. New York, NY: Center Street, 2007.

MLA (8e ed.) Bronvermelding

Gibbs, Nancy, en Michael Duffy. The Preacher and the Presidents: Billy Graham in the White House. Center Street, 2007.