Citação norma APA

Pennock, D. M., Flake, G. W., Lawrence, S., Glover, E. J., & Giles, C. L. (2002). Winners don't take all: Characterizing the competition for links on the web. National Academy of Sciences.

Citação norma Chicago

Pennock, David M., Gary W. Flake, Steve Lawrence, Eric J. Glover, and C. Lee Giles. Winners Don't Take All: Characterizing the Competition for Links on the Web. National Academy of Sciences, 2002.

Citação norma MLA

Pennock, David M., et al. Winners Don't Take All: Characterizing the Competition for Links on the Web. National Academy of Sciences, 2002.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.