Gaya APA
Wirtz, J., Lovelock, C. (2023).
Services Marketing : Manusia, Teknologi, Strategi (1).
Jakarta:
Gramedia Pustaka Utama.
Gaya MLA
Wirtz, Jochen., Lovelock, Christopher.
"Services Marketing : Manusia, Teknologi, Strategi".
1
Jakarta:
Gramedia Pustaka Utama,
2023.
Teks.