APA (7th ed.) Citation

Susana, F., & Portela, M. (2016). Student Performance in Mathematics in Portugal using PISA-2009 data.

Chicago Style (17th ed.) Citation

Susana, Faria, and Maria Portela. Student Performance in Mathematics in Portugal Using PISA-2009 Data. 2016.

MLA (8th ed.) Citation

Susana, Faria, and Maria Portela. Student Performance in Mathematics in Portugal Using PISA-2009 Data. 2016.

Warning: These citations may not always be 100% accurate.