Lua APA (7ú heag.)

Keller Gerald. (2012). Managerial Statistics (9th.). cengage learning.

Lua i Stíl Chicago (17ú heag.)

Keller Gerald. Managerial Statistics. 9th. Delhi: cengage learning, 2012.

Lua MLA (9ú heag.)

Keller Gerald. Managerial Statistics. 9th. cengage learning, 2012.

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