APA aipamena

Niemann, G. (2007). Big Brown: The untold story of UPS. San Francisco: Jossey-Bass.

Chicago Style aipamena

Niemann, Greg. Big Brown: The Untold Story of UPS. San Francisco: Jossey-Bass, 2007.

MLA aipamena

Niemann, Greg. Big Brown: The Untold Story of UPS. San Francisco: Jossey-Bass, 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.