Παραπομπή APA

Wightman, A. S. (1971). Troubles in the external field problelml for invariant wave equations. Gordon and Breach.

Παραπομπή Chicago Style

Wightman, A S. Troubles in the External Field Problelml for Invariant Wave Equations. New York: Gordon and Breach, 1971.

Παραπομπή MLA

Wightman, A S. Troubles in the External Field Problelml for Invariant Wave Equations. Gordon and Breach, 1971.