Citazione Stile APA (7a Edizione)

Porter, M., Mucha, P., Newman, M., & Friend, A. (2007). Community structure in the United States House of Representatives.

Citazione stile Chigago Style (17a edizione)

Porter, M., P. Mucha, M. Newman, e A. Friend. Community Structure in the United States House of Representatives. 2007.

Citatione MLA (9a ed.)

Porter, M., et al. Community Structure in the United States House of Representatives. 2007.