Cita APA (7th ed.)

Cyril, S., & McEnerney, J. I. (2007). Letters 1-50. Catholic University of America Press.

Cita Chicago (17th ed.)

Cyril, Saint, i John I. McEnerney. Letters 1-50. Washington, D.C.: Catholic University of America Press, 2007.

Cita MLA (9th ed.)

Cyril, Saint, i John I. McEnerney. Letters 1-50. Catholic University of America Press, 2007.