APA (7th ed.) Citation

Moreira, E., Mexia, J., & Pereira, L. (2012). Are drought occurrence and severity aggravating ? A study on SPI drought class transitions using log-linear models and ANOVA-like inference.

Chicago Style (17th ed.) Citation

Moreira, E.E, J.T Mexia, and L.S Pereira. Are Drought Occurrence and Severity Aggravating ? A Study on SPI Drought Class Transitions Using Log-linear Models and ANOVA-like Inference. 2012.

MLA (8th ed.) Citation

Moreira, E.E, et al. Are Drought Occurrence and Severity Aggravating ? A Study on SPI Drought Class Transitions Using Log-linear Models and ANOVA-like Inference. 2012.

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