APA (7th ed.) Citation

Siudek, M., Barnacka, A., Kaminski, B., Malek, K., Mankiewicz, L., Sokolowski, M., & Zarnecki, F. (2011). Observations of Cepheids in Pi of the Sky experiment.

Chicago Style (17th ed.) Citation

Siudek, M., A. Barnacka, B. Kaminski, K. Malek, L. Mankiewicz, Marcin Sokolowski, and F. Zarnecki. Observations of Cepheids in Pi of the Sky Experiment. 2011.

MLA (9th ed.) Citation

Siudek, M., et al. Observations of Cepheids in Pi of the Sky Experiment. 2011.