APA (7th ed.) Citation

R.A.O, N., Ferraz, C. A., Martins, F., & Sousa, S. (2017). Assessment of shipping emissions on four ports of Portugal.

Chicago Style (17th ed.) Citation

R.A.O, Nunes, Conceição Alvim Ferraz, FG Martins, and SIV Sousa. Assessment of Shipping Emissions on Four Ports of Portugal. 2017.

MLA (8th ed.) Citation

R.A.O, Nunes, et al. Assessment of Shipping Emissions on Four Ports of Portugal. 2017.