Díaz-Guerrero, R., & Spielberger, C. D. (1986). Cross-cultural anxiety. Hemisphere.
Dyfyniad Arddull ChicagoDíaz-Guerrero, Rogelio, and Charles Donald Spielberger. Cross-cultural Anxiety. Washington ; London: Hemisphere, 1986.
Dyfyniad MLADíaz-Guerrero, Rogelio, and Charles Donald Spielberger. Cross-cultural Anxiety. Hemisphere, 1986.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.