Cita APA (7th ed.)
Barclay, W. (1957). Letters to the seven churches. SCM Press, Ltd..
Cita Chicago (17th ed.)
Barclay, William. Letters to the Seven Churches. London, enk: SCM Press, Ltd., 1957.
Cita MLA (9th ed.)
Barclay, William. Letters to the Seven Churches. SCM Press, Ltd., 1957.
Atenció: Aquestes cites poden no estar 100% correctes.