Lua APA (7ú heag.)

Drucker P. (2010). The Changing World of the Executive. Harvard Bus.Sch Pub.

Lua i Stíl Chicago (17ú heag.)

Drucker P. The Changing World of the Executive. Boston: Harvard Bus.Sch Pub, 2010.

Lua MLA (9ú heag.)

Drucker P. The Changing World of the Executive. Harvard Bus.Sch Pub, 2010.

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