Gaya APA

Tyagi, R, K., Gupta, P. (2008). A complete and balanced service scorecard : creating value through sustained performance improvement . New Jersey: Pearson Education.

Gaya MLA

Tyagi, Rajesh, K.., Gupta, Praveen. "A complete and balanced service scorecard : creating value through sustained performance improvement". New Jersey: Pearson Education, 2008. Buku/Printed Material.