Wirtz, J., Lovelock, C., & Chatterjee, J. (2019). Services Marketing: People, Technology, Strategy (8th ed.). Pearson Education India Pvt. Ltd.
Lua i Stíl Chicago (17ú heag.)Wirtz, Jochen, Christopher Lovelock, agus Jayanta Chatterjee. Services Marketing: People, Technology, Strategy. 8th ed. New Delhi: Pearson Education India Pvt. Ltd, 2019.
Lua MLA (9ú heag.)Wirtz, Jochen, et al. Services Marketing: People, Technology, Strategy. 8th ed. Pearson Education India Pvt. Ltd, 2019.
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