APA-viite (7. p.)

Wirtz, J., & Lovelock, C. (2018). Essentials of services marketing (3rd edition.). Pearson Education Limited.

Chicago-viite (17. p.)

Wirtz, Jochen, ja Christopher Lovelock. Essentials of Services Marketing. 3rd edition. Harlow, Essex, England: Pearson Education Limited, 2018.

MLA-viite (9. p.)

Wirtz, Jochen, ja Christopher Lovelock. Essentials of Services Marketing. 3rd edition. Pearson Education Limited, 2018.