Παραπομπή APA

Chowdhury, S. (2001). The power of six sigma. Pearson Education.

Παραπομπή Chicago Style

Chowdhury, Subir. The Power of Six Sigma. New Delhi: Pearson Education, 2001.

Παραπομπή MLA

Chowdhury, Subir. The Power of Six Sigma. Pearson Education, 2001.