APA (7th ed.) Citation

Prem Vrat, Sardana, G. D., & Sahay, B. S. (2009). Productivity measurement for business excellence. Alpha Science International.

Chicago Style (17th ed.) Citation

Prem Vrat, G. D. Sardana, and B. S. Sahay. Productivity Measurement for Business Excellence. Oxford, U.K.: Alpha Science International, 2009.

MLA (9th ed.) Citation

Prem Vrat, et al. Productivity Measurement for Business Excellence. Alpha Science International, 2009.