Dyfyniad APA

Hellman, S., & Rotblat, J. (1994). A world at the crossroads: New conflicts, new solutions : annals of Pugwash 1993. Singapore ; River Edge, N.J.: World Scientific.

Dyfyniad Arddull Chicago

Hellman, Sven., và Joseph Rotblat. A World At the Crossroads: New Conflicts, New Solutions : Annals of Pugwash 1993. Singapore ; River Edge, N.J.: World Scientific, 1994.

Dyfyniad MLA

Hellman, Sven., và Joseph Rotblat. A World At the Crossroads: New Conflicts, New Solutions : Annals of Pugwash 1993. Singapore ; River Edge, N.J.: World Scientific, 1994.

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