Zimmerman, O. T., & Lavine, I. (1949). Scientific and technical abbreviations, signs and symbols (2nd ed.). Industrial Research Service.
Citação norma ChicagoZimmerman, Oswald Theodore, and Irvin Lavine. Scientific and Technical Abbreviations, Signs and Symbols. 2nd ed. Dover, N.H: Industrial Research Service, 1949.
Citação norma MLAZimmerman, Oswald Theodore, and Irvin Lavine. Scientific and Technical Abbreviations, Signs and Symbols. 2nd ed. Industrial Research Service, 1949.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.