APA Style

herlawanto, ruddy, Adriansyah, Muhril. (2013). Service quality to improve sales performance in the certification industry: a case study of PT XYZ . : Swiss German University.

Chicago Style

herlawanto, ruddy, Adriansyah, Muhril. Service quality to improve sales performance in the certification industry: a case study of PT XYZ. : Swiss German University, 2013. print.

MLA Style

herlawanto, ruddy, Adriansyah, Muhril. Service quality to improve sales performance in the certification industry: a case study of PT XYZ. : Swiss German University, 2013. print.

Turabian Style

herlawanto, ruddy, Adriansyah, Muhril. Service quality to improve sales performance in the certification industry: a case study of PT XYZ. : Swiss German University, 2013. print.