APA (7th ed.) Citation

Freitas, M. C., Justino, J., & Grego, J. (2011). Neutron activation analysis of some biological environmental materials.

Chicago Style (17th ed.) Citation

Freitas, M. C., Jorge Justino, and José Grego. Neutron Activation Analysis of Some Biological Environmental Materials. 2011.

MLA (8th ed.) Citation

Freitas, M. C., et al. Neutron Activation Analysis of Some Biological Environmental Materials. 2011.