APA (7th ed.) Citation

Martins, I., Ferreira, P. M., & Ruano, A. (2013). Estimation and prediction of cloudiness from ground-based all-sky hemispherical digital images.

Chicago Style (17th ed.) Citation

Martins, I., P. M. Ferreira, and Antonio Ruano. Estimation and Prediction of Cloudiness from Ground-based All-sky Hemispherical Digital Images. 2013.

MLA (8th ed.) Citation

Martins, I., et al. Estimation and Prediction of Cloudiness from Ground-based All-sky Hemispherical Digital Images. 2013.