Lua APA (7ú heag.)

Wrigley, E. A. (2004). Poverty, progress, and population. Cambridge University Press.

Lua i Stíl Chicago (17ú heag.)

Wrigley, E. A. Poverty, Progress, and Population. Cambridge: Cambridge University Press, 2004.

Lua MLA (9ú heag.)

Wrigley, E. A. Poverty, Progress, and Population. Cambridge University Press, 2004.

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