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.
Παραπομπή Chicago StyleHellman, Sven., και Joseph Rotblat. A World At the Crossroads: New Conflicts, New Solutions : Annals of Pugwash 1993. Singapore ; River Edge, N.J.: World Scientific, 1994.
Παραπομπή MLAHellman, Sven., και Joseph Rotblat. A World At the Crossroads: New Conflicts, New Solutions : Annals of Pugwash 1993. Singapore ; River Edge, N.J.: World Scientific, 1994.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.