Dyfyniad APA

Calder, R., Amirsadeghi, H., & Borgese, E. M. (1983). The Future of a troubled world. Heinemann.

Dyfyniad Arddull Chicago

Calder, Ritchie, Hossein Amirsadeghi, and Elisabeth Mann Borgese. The Future of a Troubled World. London: Heinemann, 1983.

Dyfyniad MLA

Calder, Ritchie, et al. The Future of a Troubled World. Heinemann, 1983.

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