APA (7th ed.) Citation

Barbosa, P., Kato, M., & Duarte, E. (2005). Null subjects in european and Brasilian Portuguese.

Chicago Style (17th ed.) Citation

Barbosa, Pilar, Mary Kato, and Eugênia Duarte. Null Subjects in European and Brasilian Portuguese. 2005.

MLA (8th ed.) Citation

Barbosa, Pilar, et al. Null Subjects in European and Brasilian Portuguese. 2005.