Porter, M., Mucha, P., Newman, M., & Friend, A. (2007). Community structure in the United States House of Representatives.
Lua i Stíl Chicago (17ú heag.)Porter, M., P. Mucha, M. Newman, agus A. Friend. Community Structure in the United States House of Representatives. 2007.
Lua MLA (9ú heag.)Porter, M., et al. Community Structure in the United States House of Representatives. 2007.
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