APA način citiranja (7. izdanje)

Duckworth, H. A. &. H. (2016). A Six sigma approach to sustainability. CRC Press.

Čikaški stil citiranja (17. izdanje)

Duckworth, Holly A. & Hoffmeier. A Six Sigma Approach to Sustainability. Boca Ratan: CRC Press, 2016.

MLA način citiranja (9. izdanje)

Duckworth, Holly A. & Hoffmeier. A Six Sigma Approach to Sustainability. CRC Press, 2016.