APA (7th ed.) Citation

Roman, P. (1961). Theory of elementary particles (2., improved and rev. ed.). North-Holland Publ. Comp.

Chicago Style (17th ed.) Citation

Roman, Paul. Theory of Elementary Particles. 2., improved and rev. ed. Amsterdam: North-Holland Publ. Comp, 1961.

MLA (9th ed.) Citation

Roman, Paul. Theory of Elementary Particles. 2., improved and rev. ed. North-Holland Publ. Comp, 1961.