Gaya APA

Koskela, H. (2002). Customer satisfaction and loyalty in after service modes of care in telecommunications systems delivery : by Heikki Koskela . Finland: Helsinki University of Technology.

Gaya MLA

Koskela, Heikki. "Customer satisfaction and loyalty in after service modes of care in telecommunications systems delivery : by Heikki Koskela". Finland: Helsinki University of Technology, 2002. BUKU.