Cita APA (7a ed.)

Roberson, R. (1990). The Eastern Christian Churches: A brief survey (3th rev. ed.). Orientalia Christiana.

Cita Chicago Style (17a ed.)

Roberson, Ronald. The Eastern Christian Churches: A Brief Survey. 3th rev. ed. Roma: Orientalia Christiana, 1990.

Cita MLA (9a ed.)

Roberson, Ronald. The Eastern Christian Churches: A Brief Survey. 3th rev. ed. Orientalia Christiana, 1990.