APA aipamena

Không rõ. (2008). Operations Strategy Competing in the 21st Century. NOTNXB.

Chicago Style aipamena

Không rõ. Operations Strategy Competing in the 21st Century. NOTNXB, 2008.

MLA aipamena

Không rõ. Operations Strategy Competing in the 21st Century. NOTNXB, 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.