Speer, E. R. (1969). Generalized Feynman amplitudes. Princeton University Press.
Chicago Edition CitationSpeer, Eugene R. Generalized Feynman Amplitudes. Princeton, N.J.: Princeton University Press, 1969.
MLA Edition CitationSpeer, Eugene R. Generalized Feynman Amplitudes. Princeton University Press, 1969.
Warning: These citations may not always be 100% accurate.