Dyfyniad APA

Arrupe, P., & Harriott, J. (1977). A planet to heal: Reflections and forecasts (2d ed.). International Center for Jesuit Education.

Dyfyniad Arddull Chicago

Arrupe, Pedro, and John Harriott. A Planet to Heal: Reflections and Forecasts. 2d ed. Rome: International Center for Jesuit Education, 1977.

Dyfyniad MLA

Arrupe, Pedro, and John Harriott. A Planet to Heal: Reflections and Forecasts. 2d ed. International Center for Jesuit Education, 1977.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.