MLA
Ryan, Linda. "An Investigation of Product Service System Models." IJSSMET vol.3, no.2 2012: pp.35-49. http://doi.org/10.4018/jssmet.2012040103
APA
Ryan, L. (2012). An Investigation of Product Service System Models. International Journal of Service Science, Management, Engineering, and Technology (IJSSMET), 3(2), 35-49. http://doi.org/10.4018/jssmet.2012040103
Chicago
Ryan, Linda. "An Investigation of Product Service System Models," International Journal of Service Science, Management, Engineering, and Technology (IJSSMET) 3, no.2: 35-49. http://doi.org/10.4018/jssmet.2012040103
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